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miksi-app/libs/snarkjs.js

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(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.snarkjs = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
(function (global){
'use strict';
var objectAssign = require('object-assign');
// compare and isBuffer taken from https://github.com/feross/buffer/blob/680e9e5e488f22aac27599a57dc844a6315928dd/index.js
// original notice:
/*!
* The buffer module from node.js, for the browser.
*
* @author Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
* @license MIT
*/
function compare(a, b) {
if (a === b) {
return 0;
}
var x = a.length;
var y = b.length;
for (var i = 0, len = Math.min(x, y); i < len; ++i) {
if (a[i] !== b[i]) {
x = a[i];
y = b[i];
break;
}
}
if (x < y) {
return -1;
}
if (y < x) {
return 1;
}
return 0;
}
function isBuffer(b) {
if (global.Buffer && typeof global.Buffer.isBuffer === 'function') {
return global.Buffer.isBuffer(b);
}
return !!(b != null && b._isBuffer);
}
// based on node assert, original notice:
// NB: The URL to the CommonJS spec is kept just for tradition.
// node-assert has evolved a lot since then, both in API and behavior.
// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
//
// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
//
// Originally from narwhal.js (http://narwhaljs.org)
// Copyright (c) 2009 Thomas Robinson <280north.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the 'Software'), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
var util = require('util/');
var hasOwn = Object.prototype.hasOwnProperty;
var pSlice = Array.prototype.slice;
var functionsHaveNames = (function () {
return function foo() {}.name === 'foo';
}());
function pToString (obj) {
return Object.prototype.toString.call(obj);
}
function isView(arrbuf) {
if (isBuffer(arrbuf)) {
return false;
}
if (typeof global.ArrayBuffer !== 'function') {
return false;
}
if (typeof ArrayBuffer.isView === 'function') {
return ArrayBuffer.isView(arrbuf);
}
if (!arrbuf) {
return false;
}
if (arrbuf instanceof DataView) {
return true;
}
if (arrbuf.buffer && arrbuf.buffer instanceof ArrayBuffer) {
return true;
}
return false;
}
// 1. The assert module provides functions that throw
// AssertionError's when particular conditions are not met. The
// assert module must conform to the following interface.
var assert = module.exports = ok;
// 2. The AssertionError is defined in assert.
// new assert.AssertionError({ message: message,
// actual: actual,
// expected: expected })
var regex = /\s*function\s+([^\(\s]*)\s*/;
// based on https://github.com/ljharb/function.prototype.name/blob/adeeeec8bfcc6068b187d7d9fb3d5bb1d3a30899/implementation.js
function getName(func) {
if (!util.isFunction(func)) {
return;
}
if (functionsHaveNames) {
return func.name;
}
var str = func.toString();
var match = str.match(regex);
return match && match[1];
}
assert.AssertionError = function AssertionError(options) {
this.name = 'AssertionError';
this.actual = options.actual;
this.expected = options.expected;
this.operator = options.operator;
if (options.message) {
this.message = options.message;
this.generatedMessage = false;
} else {
this.message = getMessage(this);
this.generatedMessage = true;
}
var stackStartFunction = options.stackStartFunction || fail;
if (Error.captureStackTrace) {
Error.captureStackTrace(this, stackStartFunction);
} else {
// non v8 browsers so we can have a stacktrace
var err = new Error();
if (err.stack) {
var out = err.stack;
// try to strip useless frames
var fn_name = getName(stackStartFunction);
var idx = out.indexOf('\n' + fn_name);
if (idx >= 0) {
// once we have located the function frame
// we need to strip out everything before it (and its line)
var next_line = out.indexOf('\n', idx + 1);
out = out.substring(next_line + 1);
}
this.stack = out;
}
}
};
// assert.AssertionError instanceof Error
util.inherits(assert.AssertionError, Error);
function truncate(s, n) {
if (typeof s === 'string') {
return s.length < n ? s : s.slice(0, n);
} else {
return s;
}
}
function inspect(something) {
if (functionsHaveNames || !util.isFunction(something)) {
return util.inspect(something);
}
var rawname = getName(something);
var name = rawname ? ': ' + rawname : '';
return '[Function' + name + ']';
}
function getMessage(self) {
return truncate(inspect(self.actual), 128) + ' ' +
self.operator + ' ' +
truncate(inspect(self.expected), 128);
}
// At present only the three keys mentioned above are used and
// understood by the spec. Implementations or sub modules can pass
// other keys to the AssertionError's constructor - they will be
// ignored.
// 3. All of the following functions must throw an AssertionError
// when a corresponding condition is not met, with a message that
// may be undefined if not provided. All assertion methods provide
// both the actual and expected values to the assertion error for
// display purposes.
function fail(actual, expected, message, operator, stackStartFunction) {
throw new assert.AssertionError({
message: message,
actual: actual,
expected: expected,
operator: operator,
stackStartFunction: stackStartFunction
});
}
// EXTENSION! allows for well behaved errors defined elsewhere.
assert.fail = fail;
// 4. Pure assertion tests whether a value is truthy, as determined
// by !!guard.
// assert.ok(guard, message_opt);
// This statement is equivalent to assert.equal(true, !!guard,
// message_opt);. To test strictly for the value true, use
// assert.strictEqual(true, guard, message_opt);.
function ok(value, message) {
if (!value) fail(value, true, message, '==', assert.ok);
}
assert.ok = ok;
// 5. The equality assertion tests shallow, coercive equality with
// ==.
// assert.equal(actual, expected, message_opt);
assert.equal = function equal(actual, expected, message) {
if (actual != expected) fail(actual, expected, message, '==', assert.equal);
};
// 6. The non-equality assertion tests for whether two objects are not equal
// with != assert.notEqual(actual, expected, message_opt);
assert.notEqual = function notEqual(actual, expected, message) {
if (actual == expected) {
fail(actual, expected, message, '!=', assert.notEqual);
}
};
// 7. The equivalence assertion tests a deep equality relation.
// assert.deepEqual(actual, expected, message_opt);
assert.deepEqual = function deepEqual(actual, expected, message) {
if (!_deepEqual(actual, expected, false)) {
fail(actual, expected, message, 'deepEqual', assert.deepEqual);
}
};
assert.deepStrictEqual = function deepStrictEqual(actual, expected, message) {
if (!_deepEqual(actual, expected, true)) {
fail(actual, expected, message, 'deepStrictEqual', assert.deepStrictEqual);
}
};
function _deepEqual(actual, expected, strict, memos) {
// 7.1. All identical values are equivalent, as determined by ===.
if (actual === expected) {
return true;
} else if (isBuffer(actual) && isBuffer(expected)) {
return compare(actual, expected) === 0;
// 7.2. If the expected value is a Date object, the actual value is
// equivalent if it is also a Date object that refers to the same time.
} else if (util.isDate(actual) && util.isDate(expected)) {
return actual.getTime() === expected.getTime();
// 7.3 If the expected value is a RegExp object, the actual value is
// equivalent if it is also a RegExp object with the same source and
// properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
} else if (util.isRegExp(actual) && util.isRegExp(expected)) {
return actual.source === expected.source &&
actual.global === expected.global &&
actual.multiline === expected.multiline &&
actual.lastIndex === expected.lastIndex &&
actual.ignoreCase === expected.ignoreCase;
// 7.4. Other pairs that do not both pass typeof value == 'object',
// equivalence is determined by ==.
} else if ((actual === null || typeof actual !== 'object') &&
(expected === null || typeof expected !== 'object')) {
return strict ? actual === expected : actual == expected;
// If both values are instances of typed arrays, wrap their underlying
// ArrayBuffers in a Buffer each to increase performance
// This optimization requires the arrays to have the same type as checked by
// Object.prototype.toString (aka pToString). Never perform binary
// comparisons for Float*Arrays, though, since e.g. +0 === -0 but their
// bit patterns are not identical.
} else if (isView(actual) && isView(expected) &&
pToString(actual) === pToString(expected) &&
!(actual instanceof Float32Array ||
actual instanceof Float64Array)) {
return compare(new Uint8Array(actual.buffer),
new Uint8Array(expected.buffer)) === 0;
// 7.5 For all other Object pairs, including Array objects, equivalence is
// determined by having the same number of owned properties (as verified
// with Object.prototype.hasOwnProperty.call), the same set of keys
// (although not necessarily the same order), equivalent values for every
// corresponding key, and an identical 'prototype' property. Note: this
// accounts for both named and indexed properties on Arrays.
} else if (isBuffer(actual) !== isBuffer(expected)) {
return false;
} else {
memos = memos || {actual: [], expected: []};
var actualIndex = memos.actual.indexOf(actual);
if (actualIndex !== -1) {
if (actualIndex === memos.expected.indexOf(expected)) {
return true;
}
}
memos.actual.push(actual);
memos.expected.push(expected);
return objEquiv(actual, expected, strict, memos);
}
}
function isArguments(object) {
return Object.prototype.toString.call(object) == '[object Arguments]';
}
function objEquiv(a, b, strict, actualVisitedObjects) {
if (a === null || a === undefined || b === null || b === undefined)
return false;
// if one is a primitive, the other must be same
if (util.isPrimitive(a) || util.isPrimitive(b))
return a === b;
if (strict && Object.getPrototypeOf(a) !== Object.getPrototypeOf(b))
return false;
var aIsArgs = isArguments(a);
var bIsArgs = isArguments(b);
if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs))
return false;
if (aIsArgs) {
a = pSlice.call(a);
b = pSlice.call(b);
return _deepEqual(a, b, strict);
}
var ka = objectKeys(a);
var kb = objectKeys(b);
var key, i;
// having the same number of owned properties (keys incorporates
// hasOwnProperty)
if (ka.length !== kb.length)
return false;
//the same set of keys (although not necessarily the same order),
ka.sort();
kb.sort();
//~~~cheap key test
for (i = ka.length - 1; i >= 0; i--) {
if (ka[i] !== kb[i])
return false;
}
//equivalent values for every corresponding key, and
//~~~possibly expensive deep test
for (i = ka.length - 1; i >= 0; i--) {
key = ka[i];
if (!_deepEqual(a[key], b[key], strict, actualVisitedObjects))
return false;
}
return true;
}
// 8. The non-equivalence assertion tests for any deep inequality.
// assert.notDeepEqual(actual, expected, message_opt);
assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
if (_deepEqual(actual, expected, false)) {
fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
}
};
assert.notDeepStrictEqual = notDeepStrictEqual;
function notDeepStrictEqual(actual, expected, message) {
if (_deepEqual(actual, expected, true)) {
fail(actual, expected, message, 'notDeepStrictEqual', notDeepStrictEqual);
}
}
// 9. The strict equality assertion tests strict equality, as determined by ===.
// assert.strictEqual(actual, expected, message_opt);
assert.strictEqual = function strictEqual(actual, expected, message) {
if (actual !== expected) {
fail(actual, expected, message, '===', assert.strictEqual);
}
};
// 10. The strict non-equality assertion tests for strict inequality, as
// determined by !==. assert.notStrictEqual(actual, expected, message_opt);
assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
if (actual === expected) {
fail(actual, expected, message, '!==', assert.notStrictEqual);
}
};
function expectedException(actual, expected) {
if (!actual || !expected) {
return false;
}
if (Object.prototype.toString.call(expected) == '[object RegExp]') {
return expected.test(actual);
}
try {
if (actual instanceof expected) {
return true;
}
} catch (e) {
// Ignore. The instanceof check doesn't work for arrow functions.
}
if (Error.isPrototypeOf(expected)) {
return false;
}
return expected.call({}, actual) === true;
}
function _tryBlock(block) {
var error;
try {
block();
} catch (e) {
error = e;
}
return error;
}
function _throws(shouldThrow, block, expected, message) {
var actual;
if (typeof block !== 'function') {
throw new TypeError('"block" argument must be a function');
}
if (typeof expected === 'string') {
message = expected;
expected = null;
}
actual = _tryBlock(block);
message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
(message ? ' ' + message : '.');
if (shouldThrow && !actual) {
fail(actual, expected, 'Missing expected exception' + message);
}
var userProvidedMessage = typeof message === 'string';
var isUnwantedException = !shouldThrow && util.isError(actual);
var isUnexpectedException = !shouldThrow && actual && !expected;
if ((isUnwantedException &&
userProvidedMessage &&
expectedException(actual, expected)) ||
isUnexpectedException) {
fail(actual, expected, 'Got unwanted exception' + message);
}
if ((shouldThrow && actual && expected &&
!expectedException(actual, expected)) || (!shouldThrow && actual)) {
throw actual;
}
}
// 11. Expected to throw an error:
// assert.throws(block, Error_opt, message_opt);
assert.throws = function(block, /*optional*/error, /*optional*/message) {
_throws(true, block, error, message);
};
// EXTENSION! This is annoying to write outside this module.
assert.doesNotThrow = function(block, /*optional*/error, /*optional*/message) {
_throws(false, block, error, message);
};
assert.ifError = function(err) { if (err) throw err; };
// Expose a strict only variant of assert
function strict(value, message) {
if (!value) fail(value, true, message, '==', strict);
}
assert.strict = objectAssign(strict, assert, {
equal: assert.strictEqual,
deepEqual: assert.deepStrictEqual,
notEqual: assert.notStrictEqual,
notDeepEqual: assert.notDeepStrictEqual
});
assert.strict.strict = assert.strict;
var objectKeys = Object.keys || function (obj) {
var keys = [];
for (var key in obj) {
if (hasOwn.call(obj, key)) keys.push(key);
}
return keys;
};
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"object-assign":38,"util/":4}],2:[function(require,module,exports){
if (typeof Object.create === 'function') {
// implementation from standard node.js 'util' module
module.exports = function inherits(ctor, superCtor) {
ctor.super_ = superCtor
ctor.prototype = Object.create(superCtor.prototype, {
constructor: {
value: ctor,
enumerable: false,
writable: true,
configurable: true
}
});
};
} else {
// old school shim for old browsers
module.exports = function inherits(ctor, superCtor) {
ctor.super_ = superCtor
var TempCtor = function () {}
TempCtor.prototype = superCtor.prototype
ctor.prototype = new TempCtor()
ctor.prototype.constructor = ctor
}
}
},{}],3:[function(require,module,exports){
module.exports = function isBuffer(arg) {
return arg && typeof arg === 'object'
&& typeof arg.copy === 'function'
&& typeof arg.fill === 'function'
&& typeof arg.readUInt8 === 'function';
}
},{}],4:[function(require,module,exports){
(function (process,global){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
var formatRegExp = /%[sdj%]/g;
exports.format = function(f) {
if (!isString(f)) {
var objects = [];
for (var i = 0; i < arguments.length; i++) {
objects.push(inspect(arguments[i]));
}
return objects.join(' ');
}
var i = 1;
var args = arguments;
var len = args.length;
var str = String(f).replace(formatRegExp, function(x) {
if (x === '%%') return '%';
if (i >= len) return x;
switch (x) {
case '%s': return String(args[i++]);
case '%d': return Number(args[i++]);
case '%j':
try {
return JSON.stringify(args[i++]);
} catch (_) {
return '[Circular]';
}
default:
return x;
}
});
for (var x = args[i]; i < len; x = args[++i]) {
if (isNull(x) || !isObject(x)) {
str += ' ' + x;
} else {
str += ' ' + inspect(x);
}
}
return str;
};
// Mark that a method should not be used.
// Returns a modified function which warns once by default.
// If --no-deprecation is set, then it is a no-op.
exports.deprecate = function(fn, msg) {
// Allow for deprecating things in the process of starting up.
if (isUndefined(global.process)) {
return function() {
return exports.deprecate(fn, msg).apply(this, arguments);
};
}
if (process.noDeprecation === true) {
return fn;
}
var warned = false;
function deprecated() {
if (!warned) {
if (process.throwDeprecation) {
throw new Error(msg);
} else if (process.traceDeprecation) {
console.trace(msg);
} else {
console.error(msg);
}
warned = true;
}
return fn.apply(this, arguments);
}
return deprecated;
};
var debugs = {};
var debugEnviron;
exports.debuglog = function(set) {
if (isUndefined(debugEnviron))
debugEnviron = process.env.NODE_DEBUG || '';
set = set.toUpperCase();
if (!debugs[set]) {
if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
var pid = process.pid;
debugs[set] = function() {
var msg = exports.format.apply(exports, arguments);
console.error('%s %d: %s', set, pid, msg);
};
} else {
debugs[set] = function() {};
}
}
return debugs[set];
};
/**
* Echos the value of a value. Trys to print the value out
* in the best way possible given the different types.
*
* @param {Object} obj The object to print out.
* @param {Object} opts Optional options object that alters the output.
*/
/* legacy: obj, showHidden, depth, colors*/
function inspect(obj, opts) {
// default options
var ctx = {
seen: [],
stylize: stylizeNoColor
};
// legacy...
if (arguments.length >= 3) ctx.depth = arguments[2];
if (arguments.length >= 4) ctx.colors = arguments[3];
if (isBoolean(opts)) {
// legacy...
ctx.showHidden = opts;
} else if (opts) {
// got an "options" object
exports._extend(ctx, opts);
}
// set default options
if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
if (isUndefined(ctx.depth)) ctx.depth = 2;
if (isUndefined(ctx.colors)) ctx.colors = false;
if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
if (ctx.colors) ctx.stylize = stylizeWithColor;
return formatValue(ctx, obj, ctx.depth);
}
exports.inspect = inspect;
// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
inspect.colors = {
'bold' : [1, 22],
'italic' : [3, 23],
'underline' : [4, 24],
'inverse' : [7, 27],
'white' : [37, 39],
'grey' : [90, 39],
'black' : [30, 39],
'blue' : [34, 39],
'cyan' : [36, 39],
'green' : [32, 39],
'magenta' : [35, 39],
'red' : [31, 39],
'yellow' : [33, 39]
};
// Don't use 'blue' not visible on cmd.exe
inspect.styles = {
'special': 'cyan',
'number': 'yellow',
'boolean': 'yellow',
'undefined': 'grey',
'null': 'bold',
'string': 'green',
'date': 'magenta',
// "name": intentionally not styling
'regexp': 'red'
};
function stylizeWithColor(str, styleType) {
var style = inspect.styles[styleType];
if (style) {
return '\u001b[' + inspect.colors[style][0] + 'm' + str +
'\u001b[' + inspect.colors[style][1] + 'm';
} else {
return str;
}
}
function stylizeNoColor(str, styleType) {
return str;
}
function arrayToHash(array) {
var hash = {};
array.forEach(function(val, idx) {
hash[val] = true;
});
return hash;
}
function formatValue(ctx, value, recurseTimes) {
// Provide a hook for user-specified inspect functions.
// Check that value is an object with an inspect function on it
if (ctx.customInspect &&
value &&
isFunction(value.inspect) &&
// Filter out the util module, it's inspect function is special
value.inspect !== exports.inspect &&
// Also filter out any prototype objects using the circular check.
!(value.constructor && value.constructor.prototype === value)) {
var ret = value.inspect(recurseTimes, ctx);
if (!isString(ret)) {
ret = formatValue(ctx, ret, recurseTimes);
}
return ret;
}
// Primitive types cannot have properties
var primitive = formatPrimitive(ctx, value);
if (primitive) {
return primitive;
}
// Look up the keys of the object.
var keys = Object.keys(value);
var visibleKeys = arrayToHash(keys);
if (ctx.showHidden) {
keys = Object.getOwnPropertyNames(value);
}
// IE doesn't make error fields non-enumerable
// http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
if (isError(value)
&& (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
return formatError(value);
}
// Some type of object without properties can be shortcutted.
if (keys.length === 0) {
if (isFunction(value)) {
var name = value.name ? ': ' + value.name : '';
return ctx.stylize('[Function' + name + ']', 'special');
}
if (isRegExp(value)) {
return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
}
if (isDate(value)) {
return ctx.stylize(Date.prototype.toString.call(value), 'date');
}
if (isError(value)) {
return formatError(value);
}
}
var base = '', array = false, braces = ['{', '}'];
// Make Array say that they are Array
if (isArray(value)) {
array = true;
braces = ['[', ']'];
}
// Make functions say that they are functions
if (isFunction(value)) {
var n = value.name ? ': ' + value.name : '';
base = ' [Function' + n + ']';
}
// Make RegExps say that they are RegExps
if (isRegExp(value)) {
base = ' ' + RegExp.prototype.toString.call(value);
}
// Make dates with properties first say the date
if (isDate(value)) {
base = ' ' + Date.prototype.toUTCString.call(value);
}
// Make error with message first say the error
if (isError(value)) {
base = ' ' + formatError(value);
}
if (keys.length === 0 && (!array || value.length == 0)) {
return braces[0] + base + braces[1];
}
if (recurseTimes < 0) {
if (isRegExp(value)) {
return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
} else {
return ctx.stylize('[Object]', 'special');
}
}
ctx.seen.push(value);
var output;
if (array) {
output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
} else {
output = keys.map(function(key) {
return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
});
}
ctx.seen.pop();
return reduceToSingleString(output, base, braces);
}
function formatPrimitive(ctx, value) {
if (isUndefined(value))
return ctx.stylize('undefined', 'undefined');
if (isString(value)) {
var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
.replace(/'/g, "\\'")
.replace(/\\"/g, '"') + '\'';
return ctx.stylize(simple, 'string');
}
if (isNumber(value))
return ctx.stylize('' + value, 'number');
if (isBoolean(value))
return ctx.stylize('' + value, 'boolean');
// For some reason typeof null is "object", so special case here.
if (isNull(value))
return ctx.stylize('null', 'null');
}
function formatError(value) {
return '[' + Error.prototype.toString.call(value) + ']';
}
function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
var output = [];
for (var i = 0, l = value.length; i < l; ++i) {
if (hasOwnProperty(value, String(i))) {
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
String(i), true));
} else {
output.push('');
}
}
keys.forEach(function(key) {
if (!key.match(/^\d+$/)) {
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
key, true));
}
});
return output;
}
function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
var name, str, desc;
desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
if (desc.get) {
if (desc.set) {
str = ctx.stylize('[Getter/Setter]', 'special');
} else {
str = ctx.stylize('[Getter]', 'special');
}
} else {
if (desc.set) {
str = ctx.stylize('[Setter]', 'special');
}
}
if (!hasOwnProperty(visibleKeys, key)) {
name = '[' + key + ']';
}
if (!str) {
if (ctx.seen.indexOf(desc.value) < 0) {
if (isNull(recurseTimes)) {
str = formatValue(ctx, desc.value, null);
} else {
str = formatValue(ctx, desc.value, recurseTimes - 1);
}
if (str.indexOf('\n') > -1) {
if (array) {
str = str.split('\n').map(function(line) {
return ' ' + line;
}).join('\n').substr(2);
} else {
str = '\n' + str.split('\n').map(function(line) {
return ' ' + line;
}).join('\n');
}
}
} else {
str = ctx.stylize('[Circular]', 'special');
}
}
if (isUndefined(name)) {
if (array && key.match(/^\d+$/)) {
return str;
}
name = JSON.stringify('' + key);
if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
name = name.substr(1, name.length - 2);
name = ctx.stylize(name, 'name');
} else {
name = name.replace(/'/g, "\\'")
.replace(/\\"/g, '"')
.replace(/(^"|"$)/g, "'");
name = ctx.stylize(name, 'string');
}
}
return name + ': ' + str;
}
function reduceToSingleString(output, base, braces) {
var numLinesEst = 0;
var length = output.reduce(function(prev, cur) {
numLinesEst++;
if (cur.indexOf('\n') >= 0) numLinesEst++;
return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
}, 0);
if (length > 60) {
return braces[0] +
(base === '' ? '' : base + '\n ') +
' ' +
output.join(',\n ') +
' ' +
braces[1];
}
return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
}
// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(ar) {
return Array.isArray(ar);
}
exports.isArray = isArray;
function isBoolean(arg) {
return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;
function isNull(arg) {
return arg === null;
}
exports.isNull = isNull;
function isNullOrUndefined(arg) {
return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;
function isNumber(arg) {
return typeof arg === 'number';
}
exports.isNumber = isNumber;
function isString(arg) {
return typeof arg === 'string';
}
exports.isString = isString;
function isSymbol(arg) {
return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;
function isUndefined(arg) {
return arg === void 0;
}
exports.isUndefined = isUndefined;
function isRegExp(re) {
return isObject(re) && objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;
function isObject(arg) {
return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;
function isDate(d) {
return isObject(d) && objectToString(d) === '[object Date]';
}
exports.isDate = isDate;
function isError(e) {
return isObject(e) &&
(objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;
function isFunction(arg) {
return typeof arg === 'function';
}
exports.isFunction = isFunction;
function isPrimitive(arg) {
return arg === null ||
typeof arg === 'boolean' ||
typeof arg === 'number' ||
typeof arg === 'string' ||
typeof arg === 'symbol' || // ES6 symbol
typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;
exports.isBuffer = require('./support/isBuffer');
function objectToString(o) {
return Object.prototype.toString.call(o);
}
function pad(n) {
return n < 10 ? '0' + n.toString(10) : n.toString(10);
}
var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
'Oct', 'Nov', 'Dec'];
// 26 Feb 16:19:34
function timestamp() {
var d = new Date();
var time = [pad(d.getHours()),
pad(d.getMinutes()),
pad(d.getSeconds())].join(':');
return [d.getDate(), months[d.getMonth()], time].join(' ');
}
// log is just a thin wrapper to console.log that prepends a timestamp
exports.log = function() {
console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
};
/**
* Inherit the prototype methods from one constructor into another.
*
* The Function.prototype.inherits from lang.js rewritten as a standalone
* function (not on Function.prototype). NOTE: If this file is to be loaded
* during bootstrapping this function needs to be rewritten using some native
* functions as prototype setup using normal JavaScript does not work as
* expected during bootstrapping (see mirror.js in r114903).
*
* @param {function} ctor Constructor function which needs to inherit the
* prototype.
* @param {function} superCtor Constructor function to inherit prototype from.
*/
exports.inherits = require('inherits');
exports._extend = function(origin, add) {
// Don't do anything if add isn't an object
if (!add || !isObject(add)) return origin;
var keys = Object.keys(add);
var i = keys.length;
while (i--) {
origin[keys[i]] = add[keys[i]];
}
return origin;
};
function hasOwnProperty(obj, prop) {
return Object.prototype.hasOwnProperty.call(obj, prop);
}
}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./support/isBuffer":3,"_process":9,"inherits":2}],5:[function(require,module,exports){
'use strict'
exports.byteLength = byteLength
exports.toByteArray = toByteArray
exports.fromByteArray = fromByteArray
var lookup = []
var revLookup = []
var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
for (var i = 0, len = code.length; i < len; ++i) {
lookup[i] = code[i]
revLookup[code.charCodeAt(i)] = i
}
// Support decoding URL-safe base64 strings, as Node.js does.
// See: https://en.wikipedia.org/wiki/Base64#URL_applications
revLookup['-'.charCodeAt(0)] = 62
revLookup['_'.charCodeAt(0)] = 63
function getLens (b64) {
var len = b64.length
if (len % 4 > 0) {
throw new Error('Invalid string. Length must be a multiple of 4')
}
// Trim off extra bytes after placeholder bytes are found
// See: https://github.com/beatgammit/base64-js/issues/42
var validLen = b64.indexOf('=')
if (validLen === -1) validLen = len
var placeHoldersLen = validLen === len
? 0
: 4 - (validLen % 4)
return [validLen, placeHoldersLen]
}
// base64 is 4/3 + up to two characters of the original data
function byteLength (b64) {
var lens = getLens(b64)
var validLen = lens[0]
var placeHoldersLen = lens[1]
return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}
function _byteLength (b64, validLen, placeHoldersLen) {
return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}
function toByteArray (b64) {
var tmp
var lens = getLens(b64)
var validLen = lens[0]
var placeHoldersLen = lens[1]
var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))
var curByte = 0
// if there are placeholders, only get up to the last complete 4 chars
var len = placeHoldersLen > 0
? validLen - 4
: validLen
var i
for (i = 0; i < len; i += 4) {
tmp =
(revLookup[b64.charCodeAt(i)] << 18) |
(revLookup[b64.charCodeAt(i + 1)] << 12) |
(revLookup[b64.charCodeAt(i + 2)] << 6) |
revLookup[b64.charCodeAt(i + 3)]
arr[curByte++] = (tmp >> 16) & 0xFF
arr[curByte++] = (tmp >> 8) & 0xFF
arr[curByte++] = tmp & 0xFF
}
if (placeHoldersLen === 2) {
tmp =
(revLookup[b64.charCodeAt(i)] << 2) |
(revLookup[b64.charCodeAt(i + 1)] >> 4)
arr[curByte++] = tmp & 0xFF
}
if (placeHoldersLen === 1) {
tmp =
(revLookup[b64.charCodeAt(i)] << 10) |
(revLookup[b64.charCodeAt(i + 1)] << 4) |
(revLookup[b64.charCodeAt(i + 2)] >> 2)
arr[curByte++] = (tmp >> 8) & 0xFF
arr[curByte++] = tmp & 0xFF
}
return arr
}
function tripletToBase64 (num) {
return lookup[num >> 18 & 0x3F] +
lookup[num >> 12 & 0x3F] +
lookup[num >> 6 & 0x3F] +
lookup[num & 0x3F]
}
function encodeChunk (uint8, start, end) {
var tmp
var output = []
for (var i = start; i < end; i += 3) {
tmp =
((uint8[i] << 16) & 0xFF0000) +
((uint8[i + 1] << 8) & 0xFF00) +
(uint8[i + 2] & 0xFF)
output.push(tripletToBase64(tmp))
}
return output.join('')
}
function fromByteArray (uint8) {
var tmp
var len = uint8.length
var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
var parts = []
var maxChunkLength = 16383 // must be multiple of 3
// go through the array every three bytes, we'll deal with trailing stuff later
for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
parts.push(encodeChunk(
uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)
))
}
// pad the end with zeros, but make sure to not forget the extra bytes
if (extraBytes === 1) {
tmp = uint8[len - 1]
parts.push(
lookup[tmp >> 2] +
lookup[(tmp << 4) & 0x3F] +
'=='
)
} else if (extraBytes === 2) {
tmp = (uint8[len - 2] << 8) + uint8[len - 1]
parts.push(
lookup[tmp >> 10] +
lookup[(tmp >> 4) & 0x3F] +
lookup[(tmp << 2) & 0x3F] +
'='
)
}
return parts.join('')
}
},{}],6:[function(require,module,exports){
var bigInt = (function (undefined) {
"use strict";
var BASE = 1e7,
LOG_BASE = 7,
MAX_INT = 9007199254740992,
MAX_INT_ARR = smallToArray(MAX_INT),
DEFAULT_ALPHABET = "0123456789abcdefghijklmnopqrstuvwxyz";
var supportsNativeBigInt = typeof BigInt === "function";
function Integer(v, radix, alphabet, caseSensitive) {
if (typeof v === "undefined") return Integer[0];
if (typeof radix !== "undefined") return +radix === 10 && !alphabet ? parseValue(v) : parseBase(v, radix, alphabet, caseSensitive);
return parseValue(v);
}
function BigInteger(value, sign) {
this.value = value;
this.sign = sign;
this.isSmall = false;
}
BigInteger.prototype = Object.create(Integer.prototype);
function SmallInteger(value) {
this.value = value;
this.sign = value < 0;
this.isSmall = true;
}
SmallInteger.prototype = Object.create(Integer.prototype);
function NativeBigInt(value) {
this.value = value;
}
NativeBigInt.prototype = Object.create(Integer.prototype);
function isPrecise(n) {
return -MAX_INT < n && n < MAX_INT;
}
function smallToArray(n) { // For performance reasons doesn't reference BASE, need to change this function if BASE changes
if (n < 1e7)
return [n];
if (n < 1e14)
return [n % 1e7, Math.floor(n / 1e7)];
return [n % 1e7, Math.floor(n / 1e7) % 1e7, Math.floor(n / 1e14)];
}
function arrayToSmall(arr) { // If BASE changes this function may need to change
trim(arr);
var length = arr.length;
if (length < 4 && compareAbs(arr, MAX_INT_ARR) < 0) {
switch (length) {
case 0: return 0;
case 1: return arr[0];
case 2: return arr[0] + arr[1] * BASE;
default: return arr[0] + (arr[1] + arr[2] * BASE) * BASE;
}
}
return arr;
}
function trim(v) {
var i = v.length;
while (v[--i] === 0);
v.length = i + 1;
}
function createArray(length) { // function shamelessly stolen from Yaffle's library https://github.com/Yaffle/BigInteger
var x = new Array(length);
var i = -1;
while (++i < length) {
x[i] = 0;
}
return x;
}
function truncate(n) {
if (n > 0) return Math.floor(n);
return Math.ceil(n);
}
function add(a, b) { // assumes a and b are arrays with a.length >= b.length
var l_a = a.length,
l_b = b.length,
r = new Array(l_a),
carry = 0,
base = BASE,
sum, i;
for (i = 0; i < l_b; i++) {
sum = a[i] + b[i] + carry;
carry = sum >= base ? 1 : 0;
r[i] = sum - carry * base;
}
while (i < l_a) {
sum = a[i] + carry;
carry = sum === base ? 1 : 0;
r[i++] = sum - carry * base;
}
if (carry > 0) r.push(carry);
return r;
}
function addAny(a, b) {
if (a.length >= b.length) return add(a, b);
return add(b, a);
}
function addSmall(a, carry) { // assumes a is array, carry is number with 0 <= carry < MAX_INT
var l = a.length,
r = new Array(l),
base = BASE,
sum, i;
for (i = 0; i < l; i++) {
sum = a[i] - base + carry;
carry = Math.floor(sum / base);
r[i] = sum - carry * base;
carry += 1;
}
while (carry > 0) {
r[i++] = carry % base;
carry = Math.floor(carry / base);
}
return r;
}
BigInteger.prototype.add = function (v) {
var n = parseValue(v);
if (this.sign !== n.sign) {
return this.subtract(n.negate());
}
var a = this.value, b = n.value;
if (n.isSmall) {
return new BigInteger(addSmall(a, Math.abs(b)), this.sign);
}
return new BigInteger(addAny(a, b), this.sign);
};
BigInteger.prototype.plus = BigInteger.prototype.add;
SmallInteger.prototype.add = function (v) {
var n = parseValue(v);
var a = this.value;
if (a < 0 !== n.sign) {
return this.subtract(n.negate());
}
var b = n.value;
if (n.isSmall) {
if (isPrecise(a + b)) return new SmallInteger(a + b);
b = smallToArray(Math.abs(b));
}
return new BigInteger(addSmall(b, Math.abs(a)), a < 0);
};
SmallInteger.prototype.plus = SmallInteger.prototype.add;
NativeBigInt.prototype.add = function (v) {
return new NativeBigInt(this.value + parseValue(v).value);
}
NativeBigInt.prototype.plus = NativeBigInt.prototype.add;
function subtract(a, b) { // assumes a and b are arrays with a >= b
var a_l = a.length,
b_l = b.length,
r = new Array(a_l),
borrow = 0,
base = BASE,
i, difference;
for (i = 0; i < b_l; i++) {
difference = a[i] - borrow - b[i];
if (difference < 0) {
difference += base;
borrow = 1;
} else borrow = 0;
r[i] = difference;
}
for (i = b_l; i < a_l; i++) {
difference = a[i] - borrow;
if (difference < 0) difference += base;
else {
r[i++] = difference;
break;
}
r[i] = difference;
}
for (; i < a_l; i++) {
r[i] = a[i];
}
trim(r);
return r;
}
function subtractAny(a, b, sign) {
var value;
if (compareAbs(a, b) >= 0) {
value = subtract(a, b);
} else {
value = subtract(b, a);
sign = !sign;
}
value = arrayToSmall(value);
if (typeof value === "number") {
if (sign) value = -value;
return new SmallInteger(value);
}
return new BigInteger(value, sign);
}
function subtractSmall(a, b, sign) { // assumes a is array, b is number with 0 <= b < MAX_INT
var l = a.length,
r = new Array(l),
carry = -b,
base = BASE,
i, difference;
for (i = 0; i < l; i++) {
difference = a[i] + carry;
carry = Math.floor(difference / base);
difference %= base;
r[i] = difference < 0 ? difference + base : difference;
}
r = arrayToSmall(r);
if (typeof r === "number") {
if (sign) r = -r;
return new SmallInteger(r);
} return new BigInteger(r, sign);
}
BigInteger.prototype.subtract = function (v) {
var n = parseValue(v);
if (this.sign !== n.sign) {
return this.add(n.negate());
}
var a = this.value, b = n.value;
if (n.isSmall)
return subtractSmall(a, Math.abs(b), this.sign);
return subtractAny(a, b, this.sign);
};
BigInteger.prototype.minus = BigInteger.prototype.subtract;
SmallInteger.prototype.subtract = function (v) {
var n = parseValue(v);
var a = this.value;
if (a < 0 !== n.sign) {
return this.add(n.negate());
}
var b = n.value;
if (n.isSmall) {
return new SmallInteger(a - b);
}
return subtractSmall(b, Math.abs(a), a >= 0);
};
SmallInteger.prototype.minus = SmallInteger.prototype.subtract;
NativeBigInt.prototype.subtract = function (v) {
return new NativeBigInt(this.value - parseValue(v).value);
}
NativeBigInt.prototype.minus = NativeBigInt.prototype.subtract;
BigInteger.prototype.negate = function () {
return new BigInteger(this.value, !this.sign);
};
SmallInteger.prototype.negate = function () {
var sign = this.sign;
var small = new SmallInteger(-this.value);
small.sign = !sign;
return small;
};
NativeBigInt.prototype.negate = function () {
return new NativeBigInt(-this.value);
}
BigInteger.prototype.abs = function () {
return new BigInteger(this.value, false);
};
SmallInteger.prototype.abs = function () {
return new SmallInteger(Math.abs(this.value));
};
NativeBigInt.prototype.abs = function () {
return new NativeBigInt(this.value >= 0 ? this.value : -this.value);
}
function multiplyLong(a, b) {
var a_l = a.length,
b_l = b.length,
l = a_l + b_l,
r = createArray(l),
base = BASE,
product, carry, i, a_i, b_j;
for (i = 0; i < a_l; ++i) {
a_i = a[i];
for (var j = 0; j < b_l; ++j) {
b_j = b[j];
product = a_i * b_j + r[i + j];
carry = Math.floor(product / base);
r[i + j] = product - carry * base;
r[i + j + 1] += carry;
}
}
trim(r);
return r;
}
function multiplySmall(a, b) { // assumes a is array, b is number with |b| < BASE
var l = a.length,
r = new Array(l),
base = BASE,
carry = 0,
product, i;
for (i = 0; i < l; i++) {
product = a[i] * b + carry;
carry = Math.floor(product / base);
r[i] = product - carry * base;
}
while (carry > 0) {
r[i++] = carry % base;
carry = Math.floor(carry / base);
}
return r;
}
function shiftLeft(x, n) {
var r = [];
while (n-- > 0) r.push(0);
return r.concat(x);
}
function multiplyKaratsuba(x, y) {
var n = Math.max(x.length, y.length);
if (n <= 30) return multiplyLong(x, y);
n = Math.ceil(n / 2);
var b = x.slice(n),
a = x.slice(0, n),
d = y.slice(n),
c = y.slice(0, n);
var ac = multiplyKaratsuba(a, c),
bd = multiplyKaratsuba(b, d),
abcd = multiplyKaratsuba(addAny(a, b), addAny(c, d));
var product = addAny(addAny(ac, shiftLeft(subtract(subtract(abcd, ac), bd), n)), shiftLeft(bd, 2 * n));
trim(product);
return product;
}
// The following function is derived from a surface fit of a graph plotting the performance difference
// between long multiplication and karatsuba multiplication versus the lengths of the two arrays.
function useKaratsuba(l1, l2) {
return -0.012 * l1 - 0.012 * l2 + 0.000015 * l1 * l2 > 0;
}
BigInteger.prototype.multiply = function (v) {
var n = parseValue(v),
a = this.value, b = n.value,
sign = this.sign !== n.sign,
abs;
if (n.isSmall) {
if (b === 0) return Integer[0];
if (b === 1) return this;
if (b === -1) return this.negate();
abs = Math.abs(b);
if (abs < BASE) {
return new BigInteger(multiplySmall(a, abs), sign);
}
b = smallToArray(abs);
}
if (useKaratsuba(a.length, b.length)) // Karatsuba is only faster for certain array sizes
return new BigInteger(multiplyKaratsuba(a, b), sign);
return new BigInteger(multiplyLong(a, b), sign);
};
BigInteger.prototype.times = BigInteger.prototype.multiply;
function multiplySmallAndArray(a, b, sign) { // a >= 0
if (a < BASE) {
return new BigInteger(multiplySmall(b, a), sign);
}
return new BigInteger(multiplyLong(b, smallToArray(a)), sign);
}
SmallInteger.prototype._multiplyBySmall = function (a) {
if (isPrecise(a.value * this.value)) {
return new SmallInteger(a.value * this.value);
}
return multiplySmallAndArray(Math.abs(a.value), smallToArray(Math.abs(this.value)), this.sign !== a.sign);
};
BigInteger.prototype._multiplyBySmall = function (a) {
if (a.value === 0) return Integer[0];
if (a.value === 1) return this;
if (a.value === -1) return this.negate();
return multiplySmallAndArray(Math.abs(a.value), this.value, this.sign !== a.sign);
};
SmallInteger.prototype.multiply = function (v) {
return parseValue(v)._multiplyBySmall(this);
};
SmallInteger.prototype.times = SmallInteger.prototype.multiply;
NativeBigInt.prototype.multiply = function (v) {
return new NativeBigInt(this.value * parseValue(v).value);
}
NativeBigInt.prototype.times = NativeBigInt.prototype.multiply;
function square(a) {
//console.assert(2 * BASE * BASE < MAX_INT);
var l = a.length,
r = createArray(l + l),
base = BASE,
product, carry, i, a_i, a_j;
for (i = 0; i < l; i++) {
a_i = a[i];
carry = 0 - a_i * a_i;
for (var j = i; j < l; j++) {
a_j = a[j];
product = 2 * (a_i * a_j) + r[i + j] + carry;
carry = Math.floor(product / base);
r[i + j] = product - carry * base;
}
r[i + l] = carry;
}
trim(r);
return r;
}
BigInteger.prototype.square = function () {
return new BigInteger(square(this.value), false);
};
SmallInteger.prototype.square = function () {
var value = this.value * this.value;
if (isPrecise(value)) return new SmallInteger(value);
return new BigInteger(square(smallToArray(Math.abs(this.value))), false);
};
NativeBigInt.prototype.square = function (v) {
return new NativeBigInt(this.value * this.value);
}
function divMod1(a, b) { // Left over from previous version. Performs faster than divMod2 on smaller input sizes.
var a_l = a.length,
b_l = b.length,
base = BASE,
result = createArray(b.length),
divisorMostSignificantDigit = b[b_l - 1],
// normalization
lambda = Math.ceil(base / (2 * divisorMostSignificantDigit)),
remainder = multiplySmall(a, lambda),
divisor = multiplySmall(b, lambda),
quotientDigit, shift, carry, borrow, i, l, q;
if (remainder.length <= a_l) remainder.push(0);
divisor.push(0);
divisorMostSignificantDigit = divisor[b_l - 1];
for (shift = a_l - b_l; shift >= 0; shift--) {
quotientDigit = base - 1;
if (remainder[shift + b_l] !== divisorMostSignificantDigit) {
quotientDigit = Math.floor((remainder[shift + b_l] * base + remainder[shift + b_l - 1]) / divisorMostSignificantDigit);
}
// quotientDigit <= base - 1
carry = 0;
borrow = 0;
l = divisor.length;
for (i = 0; i < l; i++) {
carry += quotientDigit * divisor[i];
q = Math.floor(carry / base);
borrow += remainder[shift + i] - (carry - q * base);
carry = q;
if (borrow < 0) {
remainder[shift + i] = borrow + base;
borrow = -1;
} else {
remainder[shift + i] = borrow;
borrow = 0;
}
}
while (borrow !== 0) {
quotientDigit -= 1;
carry = 0;
for (i = 0; i < l; i++) {
carry += remainder[shift + i] - base + divisor[i];
if (carry < 0) {
remainder[shift + i] = carry + base;
carry = 0;
} else {
remainder[shift + i] = carry;
carry = 1;
}
}
borrow += carry;
}
result[shift] = quotientDigit;
}
// denormalization
remainder = divModSmall(remainder, lambda)[0];
return [arrayToSmall(result), arrayToSmall(remainder)];
}
function divMod2(a, b) { // Implementation idea shamelessly stolen from Silent Matt's library http://silentmatt.com/biginteger/
// Performs faster than divMod1 on larger input sizes.
var a_l = a.length,
b_l = b.length,
result = [],
part = [],
base = BASE,
guess, xlen, highx, highy, check;
while (a_l) {
part.unshift(a[--a_l]);
trim(part);
if (compareAbs(part, b) < 0) {
result.push(0);
continue;
}
xlen = part.length;
highx = part[xlen - 1] * base + part[xlen - 2];
highy = b[b_l - 1] * base + b[b_l - 2];
if (xlen > b_l) {
highx = (highx + 1) * base;
}
guess = Math.ceil(highx / highy);
do {
check = multiplySmall(b, guess);
if (compareAbs(check, part) <= 0) break;
guess--;
} while (guess);
result.push(guess);
part = subtract(part, check);
}
result.reverse();
return [arrayToSmall(result), arrayToSmall(part)];
}
function divModSmall(value, lambda) {
var length = value.length,
quotient = createArray(length),
base = BASE,
i, q, remainder, divisor;
remainder = 0;
for (i = length - 1; i >= 0; --i) {
divisor = remainder * base + value[i];
q = truncate(divisor / lambda);
remainder = divisor - q * lambda;
quotient[i] = q | 0;
}
return [quotient, remainder | 0];
}
function divModAny(self, v) {
var value, n = parseValue(v);
if (supportsNativeBigInt) {
return [new NativeBigInt(self.value / n.value), new NativeBigInt(self.value % n.value)];
}
var a = self.value, b = n.value;
var quotient;
if (b === 0) throw new Error("Cannot divide by zero");
if (self.isSmall) {
if (n.isSmall) {
return [new SmallInteger(truncate(a / b)), new SmallInteger(a % b)];
}
return [Integer[0], self];
}
if (n.isSmall) {
if (b === 1) return [self, Integer[0]];
if (b == -1) return [self.negate(), Integer[0]];
var abs = Math.abs(b);
if (abs < BASE) {
value = divModSmall(a, abs);
quotient = arrayToSmall(value[0]);
var remainder = value[1];
if (self.sign) remainder = -remainder;
if (typeof quotient === "number") {
if (self.sign !== n.sign) quotient = -quotient;
return [new SmallInteger(quotient), new SmallInteger(remainder)];
}
return [new BigInteger(quotient, self.sign !== n.sign), new SmallInteger(remainder)];
}
b = smallToArray(abs);
}
var comparison = compareAbs(a, b);
if (comparison === -1) return [Integer[0], self];
if (comparison === 0) return [Integer[self.sign === n.sign ? 1 : -1], Integer[0]];
// divMod1 is faster on smaller input sizes
if (a.length + b.length <= 200)
value = divMod1(a, b);
else value = divMod2(a, b);
quotient = value[0];
var qSign = self.sign !== n.sign,
mod = value[1],
mSign = self.sign;
if (typeof quotient === "number") {
if (qSign) quotient = -quotient;
quotient = new SmallInteger(quotient);
} else quotient = new BigInteger(quotient, qSign);
if (typeof mod === "number") {
if (mSign) mod = -mod;
mod = new SmallInteger(mod);
} else mod = new BigInteger(mod, mSign);
return [quotient, mod];
}
BigInteger.prototype.divmod = function (v) {
var result = divModAny(this, v);
return {
quotient: result[0],
remainder: result[1]
};
};
NativeBigInt.prototype.divmod = SmallInteger.prototype.divmod = BigInteger.prototype.divmod;
BigInteger.prototype.divide = function (v) {
return divModAny(this, v)[0];
};
NativeBigInt.prototype.over = NativeBigInt.prototype.divide = function (v) {
return new NativeBigInt(this.value / parseValue(v).value);
};
SmallInteger.prototype.over = SmallInteger.prototype.divide = BigInteger.prototype.over = BigInteger.prototype.divide;
BigInteger.prototype.mod = function (v) {
return divModAny(this, v)[1];
};
NativeBigInt.prototype.mod = NativeBigInt.prototype.remainder = function (v) {
return new NativeBigInt(this.value % parseValue(v).value);
};
SmallInteger.prototype.remainder = SmallInteger.prototype.mod = BigInteger.prototype.remainder = BigInteger.prototype.mod;
BigInteger.prototype.pow = function (v) {
var n = parseValue(v),
a = this.value,
b = n.value,
value, x, y;
if (b === 0) return Integer[1];
if (a === 0) return Integer[0];
if (a === 1) return Integer[1];
if (a === -1) return n.isEven() ? Integer[1] : Integer[-1];
if (n.sign) {
return Integer[0];
}
if (!n.isSmall) throw new Error("The exponent " + n.toString() + " is too large.");
if (this.isSmall) {
if (isPrecise(value = Math.pow(a, b)))
return new SmallInteger(truncate(value));
}
x = this;
y = Integer[1];
while (true) {
if (b & 1 === 1) {
y = y.times(x);
--b;
}
if (b === 0) break;
b /= 2;
x = x.square();
}
return y;
};
SmallInteger.prototype.pow = BigInteger.prototype.pow;
NativeBigInt.prototype.pow = function (v) {
var n = parseValue(v);
var a = this.value, b = n.value;
var _0 = BigInt(0), _1 = BigInt(1), _2 = BigInt(2);
if (b === _0) return Integer[1];
if (a === _0) return Integer[0];
if (a === _1) return Integer[1];
if (a === BigInt(-1)) return n.isEven() ? Integer[1] : Integer[-1];
if (n.isNegative()) return new NativeBigInt(_0);
var x = this;
var y = Integer[1];
while (true) {
if ((b & _1) === _1) {
y = y.times(x);
--b;
}
if (b === _0) break;
b /= _2;
x = x.square();
}
return y;
}
BigInteger.prototype.modPow = function (exp, mod) {
exp = parseValue(exp);
mod = parseValue(mod);
if (mod.isZero()) throw new Error("Cannot take modPow with modulus 0");
var r = Integer[1],
base = this.mod(mod);
if (exp.isNegative()) {
exp = exp.multiply(Integer[-1]);
base = base.modInv(mod);
}
while (exp.isPositive()) {
if (base.isZero()) return Integer[0];
if (exp.isOdd()) r = r.multiply(base).mod(mod);
exp = exp.divide(2);
base = base.square().mod(mod);
}
return r;
};
NativeBigInt.prototype.modPow = SmallInteger.prototype.modPow = BigInteger.prototype.modPow;
function compareAbs(a, b) {
if (a.length !== b.length) {
return a.length > b.length ? 1 : -1;
}
for (var i = a.length - 1; i >= 0; i--) {
if (a[i] !== b[i]) return a[i] > b[i] ? 1 : -1;
}
return 0;
}
BigInteger.prototype.compareAbs = function (v) {
var n = parseValue(v),
a = this.value,
b = n.value;
if (n.isSmall) return 1;
return compareAbs(a, b);
};
SmallInteger.prototype.compareAbs = function (v) {
var n = parseValue(v),
a = Math.abs(this.value),
b = n.value;
if (n.isSmall) {
b = Math.abs(b);
return a === b ? 0 : a > b ? 1 : -1;
}
return -1;
};
NativeBigInt.prototype.compareAbs = function (v) {
var a = this.value;
var b = parseValue(v).value;
a = a >= 0 ? a : -a;
b = b >= 0 ? b : -b;
return a === b ? 0 : a > b ? 1 : -1;
}
BigInteger.prototype.compare = function (v) {
// See discussion about comparison with Infinity:
// https://github.com/peterolson/BigInteger.js/issues/61
if (v === Infinity) {
return -1;
}
if (v === -Infinity) {
return 1;
}
var n = parseValue(v),
a = this.value,
b = n.value;
if (this.sign !== n.sign) {
return n.sign ? 1 : -1;
}
if (n.isSmall) {
return this.sign ? -1 : 1;
}
return compareAbs(a, b) * (this.sign ? -1 : 1);
};
BigInteger.prototype.compareTo = BigInteger.prototype.compare;
SmallInteger.prototype.compare = function (v) {
if (v === Infinity) {
return -1;
}
if (v === -Infinity) {
return 1;
}
var n = parseValue(v),
a = this.value,
b = n.value;
if (n.isSmall) {
return a == b ? 0 : a > b ? 1 : -1;
}
if (a < 0 !== n.sign) {
return a < 0 ? -1 : 1;
}
return a < 0 ? 1 : -1;
};
SmallInteger.prototype.compareTo = SmallInteger.prototype.compare;
NativeBigInt.prototype.compare = function (v) {
if (v === Infinity) {
return -1;
}
if (v === -Infinity) {
return 1;
}
var a = this.value;
var b = parseValue(v).value;
return a === b ? 0 : a > b ? 1 : -1;
}
NativeBigInt.prototype.compareTo = NativeBigInt.prototype.compare;
BigInteger.prototype.equals = function (v) {
return this.compare(v) === 0;
};
NativeBigInt.prototype.eq = NativeBigInt.prototype.equals = SmallInteger.prototype.eq = SmallInteger.prototype.equals = BigInteger.prototype.eq = BigInteger.prototype.equals;
BigInteger.prototype.notEquals = function (v) {
return this.compare(v) !== 0;
};
NativeBigInt.prototype.neq = NativeBigInt.prototype.notEquals = SmallInteger.prototype.neq = SmallInteger.prototype.notEquals = BigInteger.prototype.neq = BigInteger.prototype.notEquals;
BigInteger.prototype.greater = function (v) {
return this.compare(v) > 0;
};
NativeBigInt.prototype.gt = NativeBigInt.prototype.greater = SmallInteger.prototype.gt = SmallInteger.prototype.greater = BigInteger.prototype.gt = BigInteger.prototype.greater;
BigInteger.prototype.lesser = function (v) {
return this.compare(v) < 0;
};
NativeBigInt.prototype.lt = NativeBigInt.prototype.lesser = SmallInteger.prototype.lt = SmallInteger.prototype.lesser = BigInteger.prototype.lt = BigInteger.prototype.lesser;
BigInteger.prototype.greaterOrEquals = function (v) {
return this.compare(v) >= 0;
};
NativeBigInt.prototype.geq = NativeBigInt.prototype.greaterOrEquals = SmallInteger.prototype.geq = SmallInteger.prototype.greaterOrEquals = BigInteger.prototype.geq = BigInteger.prototype.greaterOrEquals;
BigInteger.prototype.lesserOrEquals = function (v) {
return this.compare(v) <= 0;
};
NativeBigInt.prototype.leq = NativeBigInt.prototype.lesserOrEquals = SmallInteger.prototype.leq = SmallInteger.prototype.lesserOrEquals = BigInteger.prototype.leq = BigInteger.prototype.lesserOrEquals;
BigInteger.prototype.isEven = function () {
return (this.value[0] & 1) === 0;
};
SmallInteger.prototype.isEven = function () {
return (this.value & 1) === 0;
};
NativeBigInt.prototype.isEven = function () {
return (this.value & BigInt(1)) === BigInt(0);
}
BigInteger.prototype.isOdd = function () {
return (this.value[0] & 1) === 1;
};
SmallInteger.prototype.isOdd = function () {
return (this.value & 1) === 1;
};
NativeBigInt.prototype.isOdd = function () {
return (this.value & BigInt(1)) === BigInt(1);
}
BigInteger.prototype.isPositive = function () {
return !this.sign;
};
SmallInteger.prototype.isPositive = function () {
return this.value > 0;
};
NativeBigInt.prototype.isPositive = SmallInteger.prototype.isPositive;
BigInteger.prototype.isNegative = function () {
return this.sign;
};
SmallInteger.prototype.isNegative = function () {
return this.value < 0;
};
NativeBigInt.prototype.isNegative = SmallInteger.prototype.isNegative;
BigInteger.prototype.isUnit = function () {
return false;
};
SmallInteger.prototype.isUnit = function () {
return Math.abs(this.value) === 1;
};
NativeBigInt.prototype.isUnit = function () {
return this.abs().value === BigInt(1);
}
BigInteger.prototype.isZero = function () {
return false;
};
SmallInteger.prototype.isZero = function () {
return this.value === 0;
};
NativeBigInt.prototype.isZero = function () {
return this.value === BigInt(0);
}
BigInteger.prototype.isDivisibleBy = function (v) {
var n = parseValue(v);
if (n.isZero()) return false;
if (n.isUnit()) return true;
if (n.compareAbs(2) === 0) return this.isEven();
return this.mod(n).isZero();
};
NativeBigInt.prototype.isDivisibleBy = SmallInteger.prototype.isDivisibleBy = BigInteger.prototype.isDivisibleBy;
function isBasicPrime(v) {
var n = v.abs();
if (n.isUnit()) return false;
if (n.equals(2) || n.equals(3) || n.equals(5)) return true;
if (n.isEven() || n.isDivisibleBy(3) || n.isDivisibleBy(5)) return false;
if (n.lesser(49)) return true;
// we don't know if it's prime: let the other functions figure it out
}
function millerRabinTest(n, a) {
var nPrev = n.prev(),
b = nPrev,
r = 0,
d, t, i, x;
while (b.isEven()) b = b.divide(2), r++;
next: for (i = 0; i < a.length; i++) {
if (n.lesser(a[i])) continue;
x = bigInt(a[i]).modPow(b, n);
if (x.isUnit() || x.equals(nPrev)) continue;
for (d = r - 1; d != 0; d--) {
x = x.square().mod(n);
if (x.isUnit()) return false;
if (x.equals(nPrev)) continue next;
}
return false;
}
return true;
}
// Set "strict" to true to force GRH-supported lower bound of 2*log(N)^2
BigInteger.prototype.isPrime = function (strict) {
var isPrime = isBasicPrime(this);
if (isPrime !== undefined) return isPrime;
var n = this.abs();
var bits = n.bitLength();
if (bits <= 64)
return millerRabinTest(n, [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37]);
var logN = Math.log(2) * bits.toJSNumber();
var t = Math.ceil((strict === true) ? (2 * Math.pow(logN, 2)) : logN);
for (var a = [], i = 0; i < t; i++) {
a.push(bigInt(i + 2));
}
return millerRabinTest(n, a);
};
NativeBigInt.prototype.isPrime = SmallInteger.prototype.isPrime = BigInteger.prototype.isPrime;
BigInteger.prototype.isProbablePrime = function (iterations, rng) {
var isPrime = isBasicPrime(this);
if (isPrime !== undefined) return isPrime;
var n = this.abs();
var t = iterations === undefined ? 5 : iterations;
for (var a = [], i = 0; i < t; i++) {
a.push(bigInt.randBetween(2, n.minus(2), rng));
}
return millerRabinTest(n, a);
};
NativeBigInt.prototype.isProbablePrime = SmallInteger.prototype.isProbablePrime = BigInteger.prototype.isProbablePrime;
BigInteger.prototype.modInv = function (n) {
var t = bigInt.zero, newT = bigInt.one, r = parseValue(n), newR = this.abs(), q, lastT, lastR;
while (!newR.isZero()) {
q = r.divide(newR);
lastT = t;
lastR = r;
t = newT;
r = newR;
newT = lastT.subtract(q.multiply(newT));
newR = lastR.subtract(q.multiply(newR));
}
if (!r.isUnit()) throw new Error(this.toString() + " and " + n.toString() + " are not co-prime");
if (t.compare(0) === -1) {
t = t.add(n);
}
if (this.isNegative()) {
return t.negate();
}
return t;
};
NativeBigInt.prototype.modInv = SmallInteger.prototype.modInv = BigInteger.prototype.modInv;
BigInteger.prototype.next = function () {
var value = this.value;
if (this.sign) {
return subtractSmall(value, 1, this.sign);
}
return new BigInteger(addSmall(value, 1), this.sign);
};
SmallInteger.prototype.next = function () {
var value = this.value;
if (value + 1 < MAX_INT) return new SmallInteger(value + 1);
return new BigInteger(MAX_INT_ARR, false);
};
NativeBigInt.prototype.next = function () {
return new NativeBigInt(this.value + BigInt(1));
}
BigInteger.prototype.prev = function () {
var value = this.value;
if (this.sign) {
return new BigInteger(addSmall(value, 1), true);
}
return subtractSmall(value, 1, this.sign);
};
SmallInteger.prototype.prev = function () {
var value = this.value;
if (value - 1 > -MAX_INT) return new SmallInteger(value - 1);
return new BigInteger(MAX_INT_ARR, true);
};
NativeBigInt.prototype.prev = function () {
return new NativeBigInt(this.value - BigInt(1));
}
var powersOfTwo = [1];
while (2 * powersOfTwo[powersOfTwo.length - 1] <= BASE) powersOfTwo.push(2 * powersOfTwo[powersOfTwo.length - 1]);
var powers2Length = powersOfTwo.length, highestPower2 = powersOfTwo[powers2Length - 1];
function shift_isSmall(n) {
return Math.abs(n) <= BASE;
}
BigInteger.prototype.shiftLeft = function (v) {
var n = parseValue(v).toJSNumber();
if (!shift_isSmall(n)) {
throw new Error(String(n) + " is too large for shifting.");
}
if (n < 0) return this.shiftRight(-n);
var result = this;
if (result.isZero()) return result;
while (n >= powers2Length) {
result = result.multiply(highestPower2);
n -= powers2Length - 1;
}
return result.multiply(powersOfTwo[n]);
};
NativeBigInt.prototype.shiftLeft = SmallInteger.prototype.shiftLeft = BigInteger.prototype.shiftLeft;
BigInteger.prototype.shiftRight = function (v) {
var remQuo;
var n = parseValue(v).toJSNumber();
if (!shift_isSmall(n)) {
throw new Error(String(n) + " is too large for shifting.");
}
if (n < 0) return this.shiftLeft(-n);
var result = this;
while (n >= powers2Length) {
if (result.isZero() || (result.isNegative() && result.isUnit())) return result;
remQuo = divModAny(result, highestPower2);
result = remQuo[1].isNegative() ? remQuo[0].prev() : remQuo[0];
n -= powers2Length - 1;
}
remQuo = divModAny(result, powersOfTwo[n]);
return remQuo[1].isNegative() ? remQuo[0].prev() : remQuo[0];
};
NativeBigInt.prototype.shiftRight = SmallInteger.prototype.shiftRight = BigInteger.prototype.shiftRight;
function bitwise(x, y, fn) {
y = parseValue(y);
var xSign = x.isNegative(), ySign = y.isNegative();
var xRem = xSign ? x.not() : x,
yRem = ySign ? y.not() : y;
var xDigit = 0, yDigit = 0;
var xDivMod = null, yDivMod = null;
var result = [];
while (!xRem.isZero() || !yRem.isZero()) {
xDivMod = divModAny(xRem, highestPower2);
xDigit = xDivMod[1].toJSNumber();
if (xSign) {
xDigit = highestPower2 - 1 - xDigit; // two's complement for negative numbers
}
yDivMod = divModAny(yRem, highestPower2);
yDigit = yDivMod[1].toJSNumber();
if (ySign) {
yDigit = highestPower2 - 1 - yDigit; // two's complement for negative numbers
}
xRem = xDivMod[0];
yRem = yDivMod[0];
result.push(fn(xDigit, yDigit));
}
var sum = fn(xSign ? 1 : 0, ySign ? 1 : 0) !== 0 ? bigInt(-1) : bigInt(0);
for (var i = result.length - 1; i >= 0; i -= 1) {
sum = sum.multiply(highestPower2).add(bigInt(result[i]));
}
return sum;
}
BigInteger.prototype.not = function () {
return this.negate().prev();
};
NativeBigInt.prototype.not = SmallInteger.prototype.not = BigInteger.prototype.not;
BigInteger.prototype.and = function (n) {
return bitwise(this, n, function (a, b) { return a & b; });
};
NativeBigInt.prototype.and = SmallInteger.prototype.and = BigInteger.prototype.and;
BigInteger.prototype.or = function (n) {
return bitwise(this, n, function (a, b) { return a | b; });
};
NativeBigInt.prototype.or = SmallInteger.prototype.or = BigInteger.prototype.or;
BigInteger.prototype.xor = function (n) {
return bitwise(this, n, function (a, b) { return a ^ b; });
};
NativeBigInt.prototype.xor = SmallInteger.prototype.xor = BigInteger.prototype.xor;
var LOBMASK_I = 1 << 30, LOBMASK_BI = (BASE & -BASE) * (BASE & -BASE) | LOBMASK_I;
function roughLOB(n) { // get lowestOneBit (rough)
// SmallInteger: return Min(lowestOneBit(n), 1 << 30)
// BigInteger: return Min(lowestOneBit(n), 1 << 14) [BASE=1e7]
var v = n.value,
x = typeof v === "number" ? v | LOBMASK_I :
typeof v === "bigint" ? v | BigInt(LOBMASK_I) :
v[0] + v[1] * BASE | LOBMASK_BI;
return x & -x;
}
function integerLogarithm(value, base) {
if (base.compareTo(value) <= 0) {
var tmp = integerLogarithm(value, base.square(base));
var p = tmp.p;
var e = tmp.e;
var t = p.multiply(base);
return t.compareTo(value) <= 0 ? { p: t, e: e * 2 + 1 } : { p: p, e: e * 2 };
}
return { p: bigInt(1), e: 0 };
}
BigInteger.prototype.bitLength = function () {
var n = this;
if (n.compareTo(bigInt(0)) < 0) {
n = n.negate().subtract(bigInt(1));
}
if (n.compareTo(bigInt(0)) === 0) {
return bigInt(0);
}
return bigInt(integerLogarithm(n, bigInt(2)).e).add(bigInt(1));
}
NativeBigInt.prototype.bitLength = SmallInteger.prototype.bitLength = BigInteger.prototype.bitLength;
function max(a, b) {
a = parseValue(a);
b = parseValue(b);
return a.greater(b) ? a : b;
}
function min(a, b) {
a = parseValue(a);
b = parseValue(b);
return a.lesser(b) ? a : b;
}
function gcd(a, b) {
a = parseValue(a).abs();
b = parseValue(b).abs();
if (a.equals(b)) return a;
if (a.isZero()) return b;
if (b.isZero()) return a;
var c = Integer[1], d, t;
while (a.isEven() && b.isEven()) {
d = min(roughLOB(a), roughLOB(b));
a = a.divide(d);
b = b.divide(d);
c = c.multiply(d);
}
while (a.isEven()) {
a = a.divide(roughLOB(a));
}
do {
while (b.isEven()) {
b = b.divide(roughLOB(b));
}
if (a.greater(b)) {
t = b; b = a; a = t;
}
b = b.subtract(a);
} while (!b.isZero());
return c.isUnit() ? a : a.multiply(c);
}
function lcm(a, b) {
a = parseValue(a).abs();
b = parseValue(b).abs();
return a.divide(gcd(a, b)).multiply(b);
}
function randBetween(a, b, rng) {
a = parseValue(a);
b = parseValue(b);
var usedRNG = rng || Math.random;
var low = min(a, b), high = max(a, b);
var range = high.subtract(low).add(1);
if (range.isSmall) return low.add(Math.floor(usedRNG() * range));
var digits = toBase(range, BASE).value;
var result = [], restricted = true;
for (var i = 0; i < digits.length; i++) {
var top = restricted ? digits[i] : BASE;
var digit = truncate(usedRNG() * top);
result.push(digit);
if (digit < top) restricted = false;
}
return low.add(Integer.fromArray(result, BASE, false));
}
var parseBase = function (text, base, alphabet, caseSensitive) {
alphabet = alphabet || DEFAULT_ALPHABET;
text = String(text);
if (!caseSensitive) {
text = text.toLowerCase();
alphabet = alphabet.toLowerCase();
}
var length = text.length;
var i;
var absBase = Math.abs(base);
var alphabetValues = {};
for (i = 0; i < alphabet.length; i++) {
alphabetValues[alphabet[i]] = i;
}
for (i = 0; i < length; i++) {
var c = text[i];
if (c === "-") continue;
if (c in alphabetValues) {
if (alphabetValues[c] >= absBase) {
if (c === "1" && absBase === 1) continue;
throw new Error(c + " is not a valid digit in base " + base + ".");
}
}
}
base = parseValue(base);
var digits = [];
var isNegative = text[0] === "-";
for (i = isNegative ? 1 : 0; i < text.length; i++) {
var c = text[i];
if (c in alphabetValues) digits.push(parseValue(alphabetValues[c]));
else if (c === "<") {
var start = i;
do { i++; } while (text[i] !== ">" && i < text.length);
digits.push(parseValue(text.slice(start + 1, i)));
}
else throw new Error(c + " is not a valid character");
}
return parseBaseFromArray(digits, base, isNegative);
};
function parseBaseFromArray(digits, base, isNegative) {
var val = Integer[0], pow = Integer[1], i;
for (i = digits.length - 1; i >= 0; i--) {
val = val.add(digits[i].times(pow));
pow = pow.times(base);
}
return isNegative ? val.negate() : val;
}
function stringify(digit, alphabet) {
alphabet = alphabet || DEFAULT_ALPHABET;
if (digit < alphabet.length) {
return alphabet[digit];
}
return "<" + digit + ">";
}
function toBase(n, base) {
base = bigInt(base);
if (base.isZero()) {
if (n.isZero()) return { value: [0], isNegative: false };
throw new Error("Cannot convert nonzero numbers to base 0.");
}
if (base.equals(-1)) {
if (n.isZero()) return { value: [0], isNegative: false };
if (n.isNegative())
return {
value: [].concat.apply([], Array.apply(null, Array(-n.toJSNumber()))
.map(Array.prototype.valueOf, [1, 0])
),
isNegative: false
};
var arr = Array.apply(null, Array(n.toJSNumber() - 1))
.map(Array.prototype.valueOf, [0, 1]);
arr.unshift([1]);
return {
value: [].concat.apply([], arr),
isNegative: false
};
}
var neg = false;
if (n.isNegative() && base.isPositive()) {
neg = true;
n = n.abs();
}
if (base.isUnit()) {
if (n.isZero()) return { value: [0], isNegative: false };
return {
value: Array.apply(null, Array(n.toJSNumber()))
.map(Number.prototype.valueOf, 1),
isNegative: neg
};
}
var out = [];
var left = n, divmod;
while (left.isNegative() || left.compareAbs(base) >= 0) {
divmod = left.divmod(base);
left = divmod.quotient;
var digit = divmod.remainder;
if (digit.isNegative()) {
digit = base.minus(digit).abs();
left = left.next();
}
out.push(digit.toJSNumber());
}
out.push(left.toJSNumber());
return { value: out.reverse(), isNegative: neg };
}
function toBaseString(n, base, alphabet) {
var arr = toBase(n, base);
return (arr.isNegative ? "-" : "") + arr.value.map(function (x) {
return stringify(x, alphabet);
}).join('');
}
BigInteger.prototype.toArray = function (radix) {
return toBase(this, radix);
};
SmallInteger.prototype.toArray = function (radix) {
return toBase(this, radix);
};
NativeBigInt.prototype.toArray = function (radix) {
return toBase(this, radix);
};
BigInteger.prototype.toString = function (radix, alphabet) {
if (radix === undefined) radix = 10;
if (radix !== 10) return toBaseString(this, radix, alphabet);
var v = this.value, l = v.length, str = String(v[--l]), zeros = "0000000", digit;
while (--l >= 0) {
digit = String(v[l]);
str += zeros.slice(digit.length) + digit;
}
var sign = this.sign ? "-" : "";
return sign + str;
};
SmallInteger.prototype.toString = function (radix, alphabet) {
if (radix === undefined) radix = 10;
if (radix != 10) return toBaseString(this, radix, alphabet);
return String(this.value);
};
NativeBigInt.prototype.toString = SmallInteger.prototype.toString;
NativeBigInt.prototype.toJSON = BigInteger.prototype.toJSON = SmallInteger.prototype.toJSON = function () { return this.toString(); }
BigInteger.prototype.valueOf = function () {
return parseInt(this.toString(), 10);
};
BigInteger.prototype.toJSNumber = BigInteger.prototype.valueOf;
SmallInteger.prototype.valueOf = function () {
return this.value;
};
SmallInteger.prototype.toJSNumber = SmallInteger.prototype.valueOf;
NativeBigInt.prototype.valueOf = NativeBigInt.prototype.toJSNumber = function () {
return parseInt(this.toString(), 10);
}
function parseStringValue(v) {
if (isPrecise(+v)) {
var x = +v;
if (x === truncate(x))
return supportsNativeBigInt ? new NativeBigInt(BigInt(x)) : new SmallInteger(x);
throw new Error("Invalid integer: " + v);
}
var sign = v[0] === "-";
if (sign) v = v.slice(1);
var split = v.split(/e/i);
if (split.length > 2) throw new Error("Invalid integer: " + split.join("e"));
if (split.length === 2) {
var exp = split[1];
if (exp[0] === "+") exp = exp.slice(1);
exp = +exp;
if (exp !== truncate(exp) || !isPrecise(exp)) throw new Error("Invalid integer: " + exp + " is not a valid exponent.");
var text = split[0];
var decimalPlace = text.indexOf(".");
if (decimalPlace >= 0) {
exp -= text.length - decimalPlace - 1;
text = text.slice(0, decimalPlace) + text.slice(decimalPlace + 1);
}
if (exp < 0) throw new Error("Cannot include negative exponent part for integers");
text += (new Array(exp + 1)).join("0");
v = text;
}
var isValid = /^([0-9][0-9]*)$/.test(v);
if (!isValid) throw new Error("Invalid integer: " + v);
if (supportsNativeBigInt) {
return new NativeBigInt(BigInt(sign ? "-" + v : v));
}
var r = [], max = v.length, l = LOG_BASE, min = max - l;
while (max > 0) {
r.push(+v.slice(min, max));
min -= l;
if (min < 0) min = 0;
max -= l;
}
trim(r);
return new BigInteger(r, sign);
}
function parseNumberValue(v) {
if (supportsNativeBigInt) {
return new NativeBigInt(BigInt(v));
}
if (isPrecise(v)) {
if (v !== truncate(v)) throw new Error(v + " is not an integer.");
return new SmallInteger(v);
}
return parseStringValue(v.toString());
}
function parseValue(v) {
if (typeof v === "number") {
return parseNumberValue(v);
}
if (typeof v === "string") {
return parseStringValue(v);
}
if (typeof v === "bigint") {
return new NativeBigInt(v);
}
return v;
}
// Pre-define numbers in range [-999,999]
for (var i = 0; i < 1000; i++) {
Integer[i] = parseValue(i);
if (i > 0) Integer[-i] = parseValue(-i);
}
// Backwards compatibility
Integer.one = Integer[1];
Integer.zero = Integer[0];
Integer.minusOne = Integer[-1];
Integer.max = max;
Integer.min = min;
Integer.gcd = gcd;
Integer.lcm = lcm;
Integer.isInstance = function (x) { return x instanceof BigInteger || x instanceof SmallInteger || x instanceof NativeBigInt; };
Integer.randBetween = randBetween;
Integer.fromArray = function (digits, base, isNegative) {
return parseBaseFromArray(digits.map(parseValue), parseValue(base || 10), isNegative);
};
return Integer;
})();
// Node.js check
if (typeof module !== "undefined" && module.hasOwnProperty("exports")) {
module.exports = bigInt;
}
//amd check
if (typeof define === "function" && define.amd) {
define( function () {
return bigInt;
});
}
},{}],7:[function(require,module,exports){
},{}],8:[function(require,module,exports){
(function (Buffer){
/*!
* The buffer module from node.js, for the browser.
*
* @author Feross Aboukhadijeh <https://feross.org>
* @license MIT
*/
/* eslint-disable no-proto */
'use strict'
var base64 = require('base64-js')
var ieee754 = require('ieee754')
exports.Buffer = Buffer
exports.SlowBuffer = SlowBuffer
exports.INSPECT_MAX_BYTES = 50
var K_MAX_LENGTH = 0x7fffffff
exports.kMaxLength = K_MAX_LENGTH
/**
* If `Buffer.TYPED_ARRAY_SUPPORT`:
* === true Use Uint8Array implementation (fastest)
* === false Print warning and recommend using `buffer` v4.x which has an Object
* implementation (most compatible, even IE6)
*
* Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
* Opera 11.6+, iOS 4.2+.
*
* We report that the browser does not support typed arrays if the are not subclassable
* using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`
* (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support
* for __proto__ and has a buggy typed array implementation.
*/
Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport()
if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' &&
typeof console.error === 'function') {
console.error(
'This browser lacks typed array (Uint8Array) support which is required by ' +
'`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'
)
}
function typedArraySupport () {
// Can typed array instances can be augmented?
try {
var arr = new Uint8Array(1)
arr.__proto__ = { __proto__: Uint8Array.prototype, foo: function () { return 42 } }
return arr.foo() === 42
} catch (e) {
return false
}
}
Object.defineProperty(Buffer.prototype, 'parent', {
enumerable: true,
get: function () {
if (!Buffer.isBuffer(this)) return undefined
return this.buffer
}
})
Object.defineProperty(Buffer.prototype, 'offset', {
enumerable: true,
get: function () {
if (!Buffer.isBuffer(this)) return undefined
return this.byteOffset
}
})
function createBuffer (length) {
if (length > K_MAX_LENGTH) {
throw new RangeError('The value "' + length + '" is invalid for option "size"')
}
// Return an augmented `Uint8Array` instance
var buf = new Uint8Array(length)
buf.__proto__ = Buffer.prototype
return buf
}
/**
* The Buffer constructor returns instances of `Uint8Array` that have their
* prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
* `Uint8Array`, so the returned instances will have all the node `Buffer` methods
* and the `Uint8Array` methods. Square bracket notation works as expected -- it
* returns a single octet.
*
* The `Uint8Array` prototype remains unmodified.
*/
function Buffer (arg, encodingOrOffset, length) {
// Common case.
if (typeof arg === 'number') {
if (typeof encodingOrOffset === 'string') {
throw new TypeError(
'The "string" argument must be of type string. Received type number'
)
}
return allocUnsafe(arg)
}
return from(arg, encodingOrOffset, length)
}
// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
if (typeof Symbol !== 'undefined' && Symbol.species != null &&
Buffer[Symbol.species] === Buffer) {
Object.defineProperty(Buffer, Symbol.species, {
value: null,
configurable: true,
enumerable: false,
writable: false
})
}
Buffer.poolSize = 8192 // not used by this implementation
function from (value, encodingOrOffset, length) {
if (typeof value === 'string') {
return fromString(value, encodingOrOffset)
}
if (ArrayBuffer.isView(value)) {
return fromArrayLike(value)
}
if (value == null) {
throw TypeError(
'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
'or Array-like Object. Received type ' + (typeof value)
)
}
if (isInstance(value, ArrayBuffer) ||
(value && isInstance(value.buffer, ArrayBuffer))) {
return fromArrayBuffer(value, encodingOrOffset, length)
}
if (typeof value === 'number') {
throw new TypeError(
'The "value" argument must not be of type number. Received type number'
)
}
var valueOf = value.valueOf && value.valueOf()
if (valueOf != null && valueOf !== value) {
return Buffer.from(valueOf, encodingOrOffset, length)
}
var b = fromObject(value)
if (b) return b
if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null &&
typeof value[Symbol.toPrimitive] === 'function') {
return Buffer.from(
value[Symbol.toPrimitive]('string'), encodingOrOffset, length
)
}
throw new TypeError(
'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
'or Array-like Object. Received type ' + (typeof value)
)
}
/**
* Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
* if value is a number.
* Buffer.from(str[, encoding])
* Buffer.from(array)
* Buffer.from(buffer)
* Buffer.from(arrayBuffer[, byteOffset[, length]])
**/
Buffer.from = function (value, encodingOrOffset, length) {
return from(value, encodingOrOffset, length)
}
// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:
// https://github.com/feross/buffer/pull/148
Buffer.prototype.__proto__ = Uint8Array.prototype
Buffer.__proto__ = Uint8Array
function assertSize (size) {
if (typeof size !== 'number') {
throw new TypeError('"size" argument must be of type number')
} else if (size < 0) {
throw new RangeError('The value "' + size + '" is invalid for option "size"')
}
}
function alloc (size, fill, encoding) {
assertSize(size)
if (size <= 0) {
return createBuffer(size)
}
if (fill !== undefined) {
// Only pay attention to encoding if it's a string. This
// prevents accidentally sending in a number that would
// be interpretted as a start offset.
return typeof encoding === 'string'
? createBuffer(size).fill(fill, encoding)
: createBuffer(size).fill(fill)
}
return createBuffer(size)
}
/**
* Creates a new filled Buffer instance.
* alloc(size[, fill[, encoding]])
**/
Buffer.alloc = function (size, fill, encoding) {
return alloc(size, fill, encoding)
}
function allocUnsafe (size) {
assertSize(size)
return createBuffer(size < 0 ? 0 : checked(size) | 0)
}
/**
* Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
* */
Buffer.allocUnsafe = function (size) {
return allocUnsafe(size)
}
/**
* Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
*/
Buffer.allocUnsafeSlow = function (size) {
return allocUnsafe(size)
}
function fromString (string, encoding) {
if (typeof encoding !== 'string' || encoding === '') {
encoding = 'utf8'
}
if (!Buffer.isEncoding(encoding)) {
throw new TypeError('Unknown encoding: ' + encoding)
}
var length = byteLength(string, encoding) | 0
var buf = createBuffer(length)
var actual = buf.write(string, encoding)
if (actual !== length) {
// Writing a hex string, for example, that contains invalid characters will
// cause everything after the first invalid character to be ignored. (e.g.
// 'abxxcd' will be treated as 'ab')
buf = buf.slice(0, actual)
}
return buf
}
function fromArrayLike (array) {
var length = array.length < 0 ? 0 : checked(array.length) | 0
var buf = createBuffer(length)
for (var i = 0; i < length; i += 1) {
buf[i] = array[i] & 255
}
return buf
}
function fromArrayBuffer (array, byteOffset, length) {
if (byteOffset < 0 || array.byteLength < byteOffset) {
throw new RangeError('"offset" is outside of buffer bounds')
}
if (array.byteLength < byteOffset + (length || 0)) {
throw new RangeError('"length" is outside of buffer bounds')
}
var buf
if (byteOffset === undefined && length === undefined) {
buf = new Uint8Array(array)
} else if (length === undefined) {
buf = new Uint8Array(array, byteOffset)
} else {
buf = new Uint8Array(array, byteOffset, length)
}
// Return an augmented `Uint8Array` instance
buf.__proto__ = Buffer.prototype
return buf
}
function fromObject (obj) {
if (Buffer.isBuffer(obj)) {
var len = checked(obj.length) | 0
var buf = createBuffer(len)
if (buf.length === 0) {
return buf
}
obj.copy(buf, 0, 0, len)
return buf
}
if (obj.length !== undefined) {
if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {
return createBuffer(0)
}
return fromArrayLike(obj)
}
if (obj.type === 'Buffer' && Array.isArray(obj.data)) {
return fromArrayLike(obj.data)
}
}
function checked (length) {
// Note: cannot use `length < K_MAX_LENGTH` here because that fails when
// length is NaN (which is otherwise coerced to zero.)
if (length >= K_MAX_LENGTH) {
throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes')
}
return length | 0
}
function SlowBuffer (length) {
if (+length != length) { // eslint-disable-line eqeqeq
length = 0
}
return Buffer.alloc(+length)
}
Buffer.isBuffer = function isBuffer (b) {
return b != null && b._isBuffer === true &&
b !== Buffer.prototype // so Buffer.isBuffer(Buffer.prototype) will be false
}
Buffer.compare = function compare (a, b) {
if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength)
if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength)
if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
throw new TypeError(
'The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array'
)
}
if (a === b) return 0
var x = a.length
var y = b.length
for (var i = 0, len = Math.min(x, y); i < len; ++i) {
if (a[i] !== b[i]) {
x = a[i]
y = b[i]
break
}
}
if (x < y) return -1
if (y < x) return 1
return 0
}
Buffer.isEncoding = function isEncoding (encoding) {
switch (String(encoding).toLowerCase()) {
case 'hex':
case 'utf8':
case 'utf-8':
case 'ascii':
case 'latin1':
case 'binary':
case 'base64':
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return true
default:
return false
}
}
Buffer.concat = function concat (list, length) {
if (!Array.isArray(list)) {
throw new TypeError('"list" argument must be an Array of Buffers')
}
if (list.length === 0) {
return Buffer.alloc(0)
}
var i
if (length === undefined) {
length = 0
for (i = 0; i < list.length; ++i) {
length += list[i].length
}
}
var buffer = Buffer.allocUnsafe(length)
var pos = 0
for (i = 0; i < list.length; ++i) {
var buf = list[i]
if (isInstance(buf, Uint8Array)) {
buf = Buffer.from(buf)
}
if (!Buffer.isBuffer(buf)) {
throw new TypeError('"list" argument must be an Array of Buffers')
}
buf.copy(buffer, pos)
pos += buf.length
}
return buffer
}
function byteLength (string, encoding) {
if (Buffer.isBuffer(string)) {
return string.length
}
if (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) {
return string.byteLength
}
if (typeof string !== 'string') {
throw new TypeError(
'The "string" argument must be one of type string, Buffer, or ArrayBuffer. ' +
'Received type ' + typeof string
)
}
var len = string.length
var mustMatch = (arguments.length > 2 && arguments[2] === true)
if (!mustMatch && len === 0) return 0
// Use a for loop to avoid recursion
var loweredCase = false
for (;;) {
switch (encoding) {
case 'ascii':
case 'latin1':
case 'binary':
return len
case 'utf8':
case 'utf-8':
return utf8ToBytes(string).length
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return len * 2
case 'hex':
return len >>> 1
case 'base64':
return base64ToBytes(string).length
default:
if (loweredCase) {
return mustMatch ? -1 : utf8ToBytes(string).length // assume utf8
}
encoding = ('' + encoding).toLowerCase()
loweredCase = true
}
}
}
Buffer.byteLength = byteLength
function slowToString (encoding, start, end) {
var loweredCase = false
// No need to verify that "this.length <= MAX_UINT32" since it's a read-only
// property of a typed array.
// This behaves neither like String nor Uint8Array in that we set start/end
// to their upper/lower bounds if the value passed is out of range.
// undefined is handled specially as per ECMA-262 6th Edition,
// Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
if (start === undefined || start < 0) {
start = 0
}
// Return early if start > this.length. Done here to prevent potential uint32
// coercion fail below.
if (start > this.length) {
return ''
}
if (end === undefined || end > this.length) {
end = this.length
}
if (end <= 0) {
return ''
}
// Force coersion to uint32. This will also coerce falsey/NaN values to 0.
end >>>= 0
start >>>= 0
if (end <= start) {
return ''
}
if (!encoding) encoding = 'utf8'
while (true) {
switch (encoding) {
case 'hex':
return hexSlice(this, start, end)
case 'utf8':
case 'utf-8':
return utf8Slice(this, start, end)
case 'ascii':
return asciiSlice(this, start, end)
case 'latin1':
case 'binary':
return latin1Slice(this, start, end)
case 'base64':
return base64Slice(this, start, end)
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return utf16leSlice(this, start, end)
default:
if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
encoding = (encoding + '').toLowerCase()
loweredCase = true
}
}
}
// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)
// to detect a Buffer instance. It's not possible to use `instanceof Buffer`
// reliably in a browserify context because there could be multiple different
// copies of the 'buffer' package in use. This method works even for Buffer
// instances that were created from another copy of the `buffer` package.
// See: https://github.com/feross/buffer/issues/154
Buffer.prototype._isBuffer = true
function swap (b, n, m) {
var i = b[n]
b[n] = b[m]
b[m] = i
}
Buffer.prototype.swap16 = function swap16 () {
var len = this.length
if (len % 2 !== 0) {
throw new RangeError('Buffer size must be a multiple of 16-bits')
}
for (var i = 0; i < len; i += 2) {
swap(this, i, i + 1)
}
return this
}
Buffer.prototype.swap32 = function swap32 () {
var len = this.length
if (len % 4 !== 0) {
throw new RangeError('Buffer size must be a multiple of 32-bits')
}
for (var i = 0; i < len; i += 4) {
swap(this, i, i + 3)
swap(this, i + 1, i + 2)
}
return this
}
Buffer.prototype.swap64 = function swap64 () {
var len = this.length
if (len % 8 !== 0) {
throw new RangeError('Buffer size must be a multiple of 64-bits')
}
for (var i = 0; i < len; i += 8) {
swap(this, i, i + 7)
swap(this, i + 1, i + 6)
swap(this, i + 2, i + 5)
swap(this, i + 3, i + 4)
}
return this
}
Buffer.prototype.toString = function toString () {
var length = this.length
if (length === 0) return ''
if (arguments.length === 0) return utf8Slice(this, 0, length)
return slowToString.apply(this, arguments)
}
Buffer.prototype.toLocaleString = Buffer.prototype.toString
Buffer.prototype.equals = function equals (b) {
if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
if (this === b) return true
return Buffer.compare(this, b) === 0
}
Buffer.prototype.inspect = function inspect () {
var str = ''
var max = exports.INSPECT_MAX_BYTES
str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim()
if (this.length > max) str += ' ... '
return '<Buffer ' + str + '>'
}
Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
if (isInstance(target, Uint8Array)) {
target = Buffer.from(target, target.offset, target.byteLength)
}
if (!Buffer.isBuffer(target)) {
throw new TypeError(
'The "target" argument must be one of type Buffer or Uint8Array. ' +
'Received type ' + (typeof target)
)
}
if (start === undefined) {
start = 0
}
if (end === undefined) {
end = target ? target.length : 0
}
if (thisStart === undefined) {
thisStart = 0
}
if (thisEnd === undefined) {
thisEnd = this.length
}
if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
throw new RangeError('out of range index')
}
if (thisStart >= thisEnd && start >= end) {
return 0
}
if (thisStart >= thisEnd) {
return -1
}
if (start >= end) {
return 1
}
start >>>= 0
end >>>= 0
thisStart >>>= 0
thisEnd >>>= 0
if (this === target) return 0
var x = thisEnd - thisStart
var y = end - start
var len = Math.min(x, y)
var thisCopy = this.slice(thisStart, thisEnd)
var targetCopy = target.slice(start, end)
for (var i = 0; i < len; ++i) {
if (thisCopy[i] !== targetCopy[i]) {
x = thisCopy[i]
y = targetCopy[i]
break
}
}
if (x < y) return -1
if (y < x) return 1
return 0
}
// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
//
// Arguments:
// - buffer - a Buffer to search
// - val - a string, Buffer, or number
// - byteOffset - an index into `buffer`; will be clamped to an int32
// - encoding - an optional encoding, relevant is val is a string
// - dir - true for indexOf, false for lastIndexOf
function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
// Empty buffer means no match
if (buffer.length === 0) return -1
// Normalize byteOffset
if (typeof byteOffset === 'string') {
encoding = byteOffset
byteOffset = 0
} else if (byteOffset > 0x7fffffff) {
byteOffset = 0x7fffffff
} else if (byteOffset < -0x80000000) {
byteOffset = -0x80000000
}
byteOffset = +byteOffset // Coerce to Number.
if (numberIsNaN(byteOffset)) {
// byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
byteOffset = dir ? 0 : (buffer.length - 1)
}
// Normalize byteOffset: negative offsets start from the end of the buffer
if (byteOffset < 0) byteOffset = buffer.length + byteOffset
if (byteOffset >= buffer.length) {
if (dir) return -1
else byteOffset = buffer.length - 1
} else if (byteOffset < 0) {
if (dir) byteOffset = 0
else return -1
}
// Normalize val
if (typeof val === 'string') {
val = Buffer.from(val, encoding)
}
// Finally, search either indexOf (if dir is true) or lastIndexOf
if (Buffer.isBuffer(val)) {
// Special case: looking for empty string/buffer always fails
if (val.length === 0) {
return -1
}
return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
} else if (typeof val === 'number') {
val = val & 0xFF // Search for a byte value [0-255]
if (typeof Uint8Array.prototype.indexOf === 'function') {
if (dir) {
return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
} else {
return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
}
}
return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
}
throw new TypeError('val must be string, number or Buffer')
}
function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
var indexSize = 1
var arrLength = arr.length
var valLength = val.length
if (encoding !== undefined) {
encoding = String(encoding).toLowerCase()
if (encoding === 'ucs2' || encoding === 'ucs-2' ||
encoding === 'utf16le' || encoding === 'utf-16le') {
if (arr.length < 2 || val.length < 2) {
return -1
}
indexSize = 2
arrLength /= 2
valLength /= 2
byteOffset /= 2
}
}
function read (buf, i) {
if (indexSize === 1) {
return buf[i]
} else {
return buf.readUInt16BE(i * indexSize)
}
}
var i
if (dir) {
var foundIndex = -1
for (i = byteOffset; i < arrLength; i++) {
if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
if (foundIndex === -1) foundIndex = i
if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
} else {
if (foundIndex !== -1) i -= i - foundIndex
foundIndex = -1
}
}
} else {
if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
for (i = byteOffset; i >= 0; i--) {
var found = true
for (var j = 0; j < valLength; j++) {
if (read(arr, i + j) !== read(val, j)) {
found = false
break
}
}
if (found) return i
}
}
return -1
}
Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
return this.indexOf(val, byteOffset, encoding) !== -1
}
Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
}
Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
}
function hexWrite (buf, string, offset, length) {
offset = Number(offset) || 0
var remaining = buf.length - offset
if (!length) {
length = remaining
} else {
length = Number(length)
if (length > remaining) {
length = remaining
}
}
var strLen = string.length
if (length > strLen / 2) {
length = strLen / 2
}
for (var i = 0; i < length; ++i) {
var parsed = parseInt(string.substr(i * 2, 2), 16)
if (numberIsNaN(parsed)) return i
buf[offset + i] = parsed
}
return i
}
function utf8Write (buf, string, offset, length) {
return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
}
function asciiWrite (buf, string, offset, length) {
return blitBuffer(asciiToBytes(string), buf, offset, length)
}
function latin1Write (buf, string, offset, length) {
return asciiWrite(buf, string, offset, length)
}
function base64Write (buf, string, offset, length) {
return blitBuffer(base64ToBytes(string), buf, offset, length)
}
function ucs2Write (buf, string, offset, length) {
return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
}
Buffer.prototype.write = function write (string, offset, length, encoding) {
// Buffer#write(string)
if (offset === undefined) {
encoding = 'utf8'
length = this.length
offset = 0
// Buffer#write(string, encoding)
} else if (length === undefined && typeof offset === 'string') {
encoding = offset
length = this.length
offset = 0
// Buffer#write(string, offset[, length][, encoding])
} else if (isFinite(offset)) {
offset = offset >>> 0
if (isFinite(length)) {
length = length >>> 0
if (encoding === undefined) encoding = 'utf8'
} else {
encoding = length
length = undefined
}
} else {
throw new Error(
'Buffer.write(string, encoding, offset[, length]) is no longer supported'
)
}
var remaining = this.length - offset
if (length === undefined || length > remaining) length = remaining
if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
throw new RangeError('Attempt to write outside buffer bounds')
}
if (!encoding) encoding = 'utf8'
var loweredCase = false
for (;;) {
switch (encoding) {
case 'hex':
return hexWrite(this, string, offset, length)
case 'utf8':
case 'utf-8':
return utf8Write(this, string, offset, length)
case 'ascii':
return asciiWrite(this, string, offset, length)
case 'latin1':
case 'binary':
return latin1Write(this, string, offset, length)
case 'base64':
// Warning: maxLength not taken into account in base64Write
return base64Write(this, string, offset, length)
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return ucs2Write(this, string, offset, length)
default:
if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
encoding = ('' + encoding).toLowerCase()
loweredCase = true
}
}
}
Buffer.prototype.toJSON = function toJSON () {
return {
type: 'Buffer',
data: Array.prototype.slice.call(this._arr || this, 0)
}
}
function base64Slice (buf, start, end) {
if (start === 0 && end === buf.length) {
return base64.fromByteArray(buf)
} else {
return base64.fromByteArray(buf.slice(start, end))
}
}
function utf8Slice (buf, start, end) {
end = Math.min(buf.length, end)
var res = []
var i = start
while (i < end) {
var firstByte = buf[i]
var codePoint = null
var bytesPerSequence = (firstByte > 0xEF) ? 4
: (firstByte > 0xDF) ? 3
: (firstByte > 0xBF) ? 2
: 1
if (i + bytesPerSequence <= end) {
var secondByte, thirdByte, fourthByte, tempCodePoint
switch (bytesPerSequence) {
case 1:
if (firstByte < 0x80) {
codePoint = firstByte
}
break
case 2:
secondByte = buf[i + 1]
if ((secondByte & 0xC0) === 0x80) {
tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
if (tempCodePoint > 0x7F) {
codePoint = tempCodePoint
}
}
break
case 3:
secondByte = buf[i + 1]
thirdByte = buf[i + 2]
if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
codePoint = tempCodePoint
}
}
break
case 4:
secondByte = buf[i + 1]
thirdByte = buf[i + 2]
fourthByte = buf[i + 3]
if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
codePoint = tempCodePoint
}
}
}
}
if (codePoint === null) {
// we did not generate a valid codePoint so insert a
// replacement char (U+FFFD) and advance only 1 byte
codePoint = 0xFFFD
bytesPerSequence = 1
} else if (codePoint > 0xFFFF) {
// encode to utf16 (surrogate pair dance)
codePoint -= 0x10000
res.push(codePoint >>> 10 & 0x3FF | 0xD800)
codePoint = 0xDC00 | codePoint & 0x3FF
}
res.push(codePoint)
i += bytesPerSequence
}
return decodeCodePointsArray(res)
}
// Based on http://stackoverflow.com/a/22747272/680742, the browser with
// the lowest limit is Chrome, with 0x10000 args.
// We go 1 magnitude less, for safety
var MAX_ARGUMENTS_LENGTH = 0x1000
function decodeCodePointsArray (codePoints) {
var len = codePoints.length
if (len <= MAX_ARGUMENTS_LENGTH) {
return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
}
// Decode in chunks to avoid "call stack size exceeded".
var res = ''
var i = 0
while (i < len) {
res += String.fromCharCode.apply(
String,
codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
)
}
return res
}
function asciiSlice (buf, start, end) {
var ret = ''
end = Math.min(buf.length, end)
for (var i = start; i < end; ++i) {
ret += String.fromCharCode(buf[i] & 0x7F)
}
return ret
}
function latin1Slice (buf, start, end) {
var ret = ''
end = Math.min(buf.length, end)
for (var i = start; i < end; ++i) {
ret += String.fromCharCode(buf[i])
}
return ret
}
function hexSlice (buf, start, end) {
var len = buf.length
if (!start || start < 0) start = 0
if (!end || end < 0 || end > len) end = len
var out = ''
for (var i = start; i < end; ++i) {
out += toHex(buf[i])
}
return out
}
function utf16leSlice (buf, start, end) {
var bytes = buf.slice(start, end)
var res = ''
for (var i = 0; i < bytes.length; i += 2) {
res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256))
}
return res
}
Buffer.prototype.slice = function slice (start, end) {
var len = this.length
start = ~~start
end = end === undefined ? len : ~~end
if (start < 0) {
start += len
if (start < 0) start = 0
} else if (start > len) {
start = len
}
if (end < 0) {
end += len
if (end < 0) end = 0
} else if (end > len) {
end = len
}
if (end < start) end = start
var newBuf = this.subarray(start, end)
// Return an augmented `Uint8Array` instance
newBuf.__proto__ = Buffer.prototype
return newBuf
}
/*
* Need to make sure that buffer isn't trying to write out of bounds.
*/
function checkOffset (offset, ext, length) {
if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
}
Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
offset = offset >>> 0
byteLength = byteLength >>> 0
if (!noAssert) checkOffset(offset, byteLength, this.length)
var val = this[offset]
var mul = 1
var i = 0
while (++i < byteLength && (mul *= 0x100)) {
val += this[offset + i] * mul
}
return val
}
Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
offset = offset >>> 0
byteLength = byteLength >>> 0
if (!noAssert) {
checkOffset(offset, byteLength, this.length)
}
var val = this[offset + --byteLength]
var mul = 1
while (byteLength > 0 && (mul *= 0x100)) {
val += this[offset + --byteLength] * mul
}
return val
}
Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 1, this.length)
return this[offset]
}
Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 2, this.length)
return this[offset] | (this[offset + 1] << 8)
}
Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 2, this.length)
return (this[offset] << 8) | this[offset + 1]
}
Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return ((this[offset]) |
(this[offset + 1] << 8) |
(this[offset + 2] << 16)) +
(this[offset + 3] * 0x1000000)
}
Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return (this[offset] * 0x1000000) +
((this[offset + 1] << 16) |
(this[offset + 2] << 8) |
this[offset + 3])
}
Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
offset = offset >>> 0
byteLength = byteLength >>> 0
if (!noAssert) checkOffset(offset, byteLength, this.length)
var val = this[offset]
var mul = 1
var i = 0
while (++i < byteLength && (mul *= 0x100)) {
val += this[offset + i] * mul
}
mul *= 0x80
if (val >= mul) val -= Math.pow(2, 8 * byteLength)
return val
}
Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
offset = offset >>> 0
byteLength = byteLength >>> 0
if (!noAssert) checkOffset(offset, byteLength, this.length)
var i = byteLength
var mul = 1
var val = this[offset + --i]
while (i > 0 && (mul *= 0x100)) {
val += this[offset + --i] * mul
}
mul *= 0x80
if (val >= mul) val -= Math.pow(2, 8 * byteLength)
return val
}
Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 1, this.length)
if (!(this[offset] & 0x80)) return (this[offset])
return ((0xff - this[offset] + 1) * -1)
}
Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 2, this.length)
var val = this[offset] | (this[offset + 1] << 8)
return (val & 0x8000) ? val | 0xFFFF0000 : val
}
Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 2, this.length)
var val = this[offset + 1] | (this[offset] << 8)
return (val & 0x8000) ? val | 0xFFFF0000 : val
}
Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return (this[offset]) |
(this[offset + 1] << 8) |
(this[offset + 2] << 16) |
(this[offset + 3] << 24)
}
Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return (this[offset] << 24) |
(this[offset + 1] << 16) |
(this[offset + 2] << 8) |
(this[offset + 3])
}
Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return ieee754.read(this, offset, true, 23, 4)
}
Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 4, this.length)
return ieee754.read(this, offset, false, 23, 4)
}
Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 8, this.length)
return ieee754.read(this, offset, true, 52, 8)
}
Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
offset = offset >>> 0
if (!noAssert) checkOffset(offset, 8, this.length)
return ieee754.read(this, offset, false, 52, 8)
}
function checkInt (buf, value, offset, ext, max, min) {
if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
if (offset + ext > buf.length) throw new RangeError('Index out of range')
}
Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
value = +value
offset = offset >>> 0
byteLength = byteLength >>> 0
if (!noAssert) {
var maxBytes = Math.pow(2, 8 * byteLength) - 1
checkInt(this, value, offset, byteLength, maxBytes, 0)
}
var mul = 1
var i = 0
this[offset] = value & 0xFF
while (++i < byteLength && (mul *= 0x100)) {
this[offset + i] = (value / mul) & 0xFF
}
return offset + byteLength
}
Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
value = +value
offset = offset >>> 0
byteLength = byteLength >>> 0
if (!noAssert) {
var maxBytes = Math.pow(2, 8 * byteLength) - 1
checkInt(this, value, offset, byteLength, maxBytes, 0)
}
var i = byteLength - 1
var mul = 1
this[offset + i] = value & 0xFF
while (--i >= 0 && (mul *= 0x100)) {
this[offset + i] = (value / mul) & 0xFF
}
return offset + byteLength
}
Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
this[offset] = (value & 0xff)
return offset + 1
}
Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
this[offset] = (value & 0xff)
this[offset + 1] = (value >>> 8)
return offset + 2
}
Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
this[offset] = (value >>> 8)
this[offset + 1] = (value & 0xff)
return offset + 2
}
Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
this[offset + 3] = (value >>> 24)
this[offset + 2] = (value >>> 16)
this[offset + 1] = (value >>> 8)
this[offset] = (value & 0xff)
return offset + 4
}
Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
this[offset] = (value >>> 24)
this[offset + 1] = (value >>> 16)
this[offset + 2] = (value >>> 8)
this[offset + 3] = (value & 0xff)
return offset + 4
}
Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) {
var limit = Math.pow(2, (8 * byteLength) - 1)
checkInt(this, value, offset, byteLength, limit - 1, -limit)
}
var i = 0
var mul = 1
var sub = 0
this[offset] = value & 0xFF
while (++i < byteLength && (mul *= 0x100)) {
if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
sub = 1
}
this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
}
return offset + byteLength
}
Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) {
var limit = Math.pow(2, (8 * byteLength) - 1)
checkInt(this, value, offset, byteLength, limit - 1, -limit)
}
var i = byteLength - 1
var mul = 1
var sub = 0
this[offset + i] = value & 0xFF
while (--i >= 0 && (mul *= 0x100)) {
if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
sub = 1
}
this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
}
return offset + byteLength
}
Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
if (value < 0) value = 0xff + value + 1
this[offset] = (value & 0xff)
return offset + 1
}
Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
this[offset] = (value & 0xff)
this[offset + 1] = (value >>> 8)
return offset + 2
}
Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
this[offset] = (value >>> 8)
this[offset + 1] = (value & 0xff)
return offset + 2
}
Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
this[offset] = (value & 0xff)
this[offset + 1] = (value >>> 8)
this[offset + 2] = (value >>> 16)
this[offset + 3] = (value >>> 24)
return offset + 4
}
Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
if (value < 0) value = 0xffffffff + value + 1
this[offset] = (value >>> 24)
this[offset + 1] = (value >>> 16)
this[offset + 2] = (value >>> 8)
this[offset + 3] = (value & 0xff)
return offset + 4
}
function checkIEEE754 (buf, value, offset, ext, max, min) {
if (offset + ext > buf.length) throw new RangeError('Index out of range')
if (offset < 0) throw new RangeError('Index out of range')
}
function writeFloat (buf, value, offset, littleEndian, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) {
checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
}
ieee754.write(buf, value, offset, littleEndian, 23, 4)
return offset + 4
}
Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
return writeFloat(this, value, offset, true, noAssert)
}
Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
return writeFloat(this, value, offset, false, noAssert)
}
function writeDouble (buf, value, offset, littleEndian, noAssert) {
value = +value
offset = offset >>> 0
if (!noAssert) {
checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
}
ieee754.write(buf, value, offset, littleEndian, 52, 8)
return offset + 8
}
Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
return writeDouble(this, value, offset, true, noAssert)
}
Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
return writeDouble(this, value, offset, false, noAssert)
}
// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function copy (target, targetStart, start, end) {
if (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer')
if (!start) start = 0
if (!end && end !== 0) end = this.length
if (targetStart >= target.length) targetStart = target.length
if (!targetStart) targetStart = 0
if (end > 0 && end < start) end = start
// Copy 0 bytes; we're done
if (end === start) return 0
if (target.length === 0 || this.length === 0) return 0
// Fatal error conditions
if (targetStart < 0) {
throw new RangeError('targetStart out of bounds')
}
if (start < 0 || start >= this.length) throw new RangeError('Index out of range')
if (end < 0) throw new RangeError('sourceEnd out of bounds')
// Are we oob?
if (end > this.length) end = this.length
if (target.length - targetStart < end - start) {
end = target.length - targetStart + start
}
var len = end - start
if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') {
// Use built-in when available, missing from IE11
this.copyWithin(targetStart, start, end)
} else if (this === target && start < targetStart && targetStart < end) {
// descending copy from end
for (var i = len - 1; i >= 0; --i) {
target[i + targetStart] = this[i + start]
}
} else {
Uint8Array.prototype.set.call(
target,
this.subarray(start, end),
targetStart
)
}
return len
}
// Usage:
// buffer.fill(number[, offset[, end]])
// buffer.fill(buffer[, offset[, end]])
// buffer.fill(string[, offset[, end]][, encoding])
Buffer.prototype.fill = function fill (val, start, end, encoding) {
// Handle string cases:
if (typeof val === 'string') {
if (typeof start === 'string') {
encoding = start
start = 0
end = this.length
} else if (typeof end === 'string') {
encoding = end
end = this.length
}
if (encoding !== undefined && typeof encoding !== 'string') {
throw new TypeError('encoding must be a string')
}
if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
throw new TypeError('Unknown encoding: ' + encoding)
}
if (val.length === 1) {
var code = val.charCodeAt(0)
if ((encoding === 'utf8' && code < 128) ||
encoding === 'latin1') {
// Fast path: If `val` fits into a single byte, use that numeric value.
val = code
}
}
} else if (typeof val === 'number') {
val = val & 255
}
// Invalid ranges are not set to a default, so can range check early.
if (start < 0 || this.length < start || this.length < end) {
throw new RangeError('Out of range index')
}
if (end <= start) {
return this
}
start = start >>> 0
end = end === undefined ? this.length : end >>> 0
if (!val) val = 0
var i
if (typeof val === 'number') {
for (i = start; i < end; ++i) {
this[i] = val
}
} else {
var bytes = Buffer.isBuffer(val)
? val
: Buffer.from(val, encoding)
var len = bytes.length
if (len === 0) {
throw new TypeError('The value "' + val +
'" is invalid for argument "value"')
}
for (i = 0; i < end - start; ++i) {
this[i + start] = bytes[i % len]
}
}
return this
}
// HELPER FUNCTIONS
// ================
var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g
function base64clean (str) {
// Node takes equal signs as end of the Base64 encoding
str = str.split('=')[0]
// Node strips out invalid characters like \n and \t from the string, base64-js does not
str = str.trim().replace(INVALID_BASE64_RE, '')
// Node converts strings with length < 2 to ''
if (str.length < 2) return ''
// Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
while (str.length % 4 !== 0) {
str = str + '='
}
return str
}
function toHex (n) {
if (n < 16) return '0' + n.toString(16)
return n.toString(16)
}
function utf8ToBytes (string, units) {
units = units || Infinity
var codePoint
var length = string.length
var leadSurrogate = null
var bytes = []
for (var i = 0; i < length; ++i) {
codePoint = string.charCodeAt(i)
// is surrogate component
if (codePoint > 0xD7FF && codePoint < 0xE000) {
// last char was a lead
if (!leadSurrogate) {
// no lead yet
if (codePoint > 0xDBFF) {
// unexpected trail
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
continue
} else if (i + 1 === length) {
// unpaired lead
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
continue
}
// valid lead
leadSurrogate = codePoint
continue
}
// 2 leads in a row
if (codePoint < 0xDC00) {
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
leadSurrogate = codePoint
continue
}
// valid surrogate pair
codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
} else if (leadSurrogate) {
// valid bmp char, but last char was a lead
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
}
leadSurrogate = null
// encode utf8
if (codePoint < 0x80) {
if ((units -= 1) < 0) break
bytes.push(codePoint)
} else if (codePoint < 0x800) {
if ((units -= 2) < 0) break
bytes.push(
codePoint >> 0x6 | 0xC0,
codePoint & 0x3F | 0x80
)
} else if (codePoint < 0x10000) {
if ((units -= 3) < 0) break
bytes.push(
codePoint >> 0xC | 0xE0,
codePoint >> 0x6 & 0x3F | 0x80,
codePoint & 0x3F | 0x80
)
} else if (codePoint < 0x110000) {
if ((units -= 4) < 0) break
bytes.push(
codePoint >> 0x12 | 0xF0,
codePoint >> 0xC & 0x3F | 0x80,
codePoint >> 0x6 & 0x3F | 0x80,
codePoint & 0x3F | 0x80
)
} else {
throw new Error('Invalid code point')
}
}
return bytes
}
function asciiToBytes (str) {
var byteArray = []
for (var i = 0; i < str.length; ++i) {
// Node's code seems to be doing this and not & 0x7F..
byteArray.push(str.charCodeAt(i) & 0xFF)
}
return byteArray
}
function utf16leToBytes (str, units) {
var c, hi, lo
var byteArray = []
for (var i = 0; i < str.length; ++i) {
if ((units -= 2) < 0) break
c = str.charCodeAt(i)
hi = c >> 8
lo = c % 256
byteArray.push(lo)
byteArray.push(hi)
}
return byteArray
}
function base64ToBytes (str) {
return base64.toByteArray(base64clean(str))
}
function blitBuffer (src, dst, offset, length) {
for (var i = 0; i < length; ++i) {
if ((i + offset >= dst.length) || (i >= src.length)) break
dst[i + offset] = src[i]
}
return i
}
// ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass
// the `instanceof` check but they should be treated as of that type.
// See: https://github.com/feross/buffer/issues/166
function isInstance (obj, type) {
return obj instanceof type ||
(obj != null && obj.constructor != null && obj.constructor.name != null &&
obj.constructor.name === type.name)
}
function numberIsNaN (obj) {
// For IE11 support
return obj !== obj // eslint-disable-line no-self-compare
}
}).call(this,require("buffer").Buffer)
},{"base64-js":5,"buffer":8,"ieee754":28}],9:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};
// cached from whatever global is present so that test runners that stub it
// don't break things. But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals. It's inside a
// function because try/catches deoptimize in certain engines.
var cachedSetTimeout;
var cachedClearTimeout;
function defaultSetTimout() {
throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout () {
throw new Error('clearTimeout has not been defined');
}
(function () {
try {
if (typeof setTimeout === 'function') {
cachedSetTimeout = setTimeout;
} else {
cachedSetTimeout = defaultSetTimout;
}
} catch (e) {
cachedSetTimeout = defaultSetTimout;
}
try {
if (typeof clearTimeout === 'function') {
cachedClearTimeout = clearTimeout;
} else {
cachedClearTimeout = defaultClearTimeout;
}
} catch (e) {
cachedClearTimeout = defaultClearTimeout;
}
} ())
function runTimeout(fun) {
if (cachedSetTimeout === setTimeout) {
//normal enviroments in sane situations
return setTimeout(fun, 0);
}
// if setTimeout wasn't available but was latter defined
if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
cachedSetTimeout = setTimeout;
return setTimeout(fun, 0);
}
try {
// when when somebody has screwed with setTimeout but no I.E. maddness
return cachedSetTimeout(fun, 0);
} catch(e){
try {
// When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
return cachedSetTimeout.call(null, fun, 0);
} catch(e){
// same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
return cachedSetTimeout.call(this, fun, 0);
}
}
}
function runClearTimeout(marker) {
if (cachedClearTimeout === clearTimeout) {
//normal enviroments in sane situations
return clearTimeout(marker);
}
// if clearTimeout wasn't available but was latter defined
if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
cachedClearTimeout = clearTimeout;
return clearTimeout(marker);
}
try {
// when when somebody has screwed with setTimeout but no I.E. maddness
return cachedClearTimeout(marker);
} catch (e){
try {
// When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
return cachedClearTimeout.call(null, marker);
} catch (e){
// same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
// Some versions of I.E. have different rules for clearTimeout vs setTimeout
return cachedClearTimeout.call(this, marker);
}
}
}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;
function cleanUpNextTick() {
if (!draining || !currentQueue) {
return;
}
draining = false;
if (currentQueue.length) {
queue = currentQueue.concat(queue);
} else {
queueIndex = -1;
}
if (queue.length) {
drainQueue();
}
}
function drainQueue() {
if (draining) {
return;
}
var timeout = runTimeout(cleanUpNextTick);
draining = true;
var len = queue.length;
while(len) {
currentQueue = queue;
queue = [];
while (++queueIndex < len) {
if (currentQueue) {
currentQueue[queueIndex].run();
}
}
queueIndex = -1;
len = queue.length;
}
currentQueue = null;
draining = false;
runClearTimeout(timeout);
}
process.nextTick = function (fun) {
var args = new Array(arguments.length - 1);
if (arguments.length > 1) {
for (var i = 1; i < arguments.length; i++) {
args[i - 1] = arguments[i];
}
}
queue.push(new Item(fun, args));
if (queue.length === 1 && !draining) {
runTimeout(drainQueue);
}
};
// v8 likes predictible objects
function Item(fun, array) {
this.fun = fun;
this.array = array;
}
Item.prototype.run = function () {
this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};
function noop() {}
process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.prependListener = noop;
process.prependOnceListener = noop;
process.listeners = function (name) { return [] }
process.binding = function (name) {
throw new Error('process.binding is not supported');
};
process.cwd = function () { return '/' };
process.chdir = function (dir) {
throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };
},{}],10:[function(require,module,exports){
(function (Buffer){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(arg) {
if (Array.isArray) {
return Array.isArray(arg);
}
return objectToString(arg) === '[object Array]';
}
exports.isArray = isArray;
function isBoolean(arg) {
return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;
function isNull(arg) {
return arg === null;
}
exports.isNull = isNull;
function isNullOrUndefined(arg) {
return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;
function isNumber(arg) {
return typeof arg === 'number';
}
exports.isNumber = isNumber;
function isString(arg) {
return typeof arg === 'string';
}
exports.isString = isString;
function isSymbol(arg) {
return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;
function isUndefined(arg) {
return arg === void 0;
}
exports.isUndefined = isUndefined;
function isRegExp(re) {
return objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;
function isObject(arg) {
return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;
function isDate(d) {
return objectToString(d) === '[object Date]';
}
exports.isDate = isDate;
function isError(e) {
return (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;
function isFunction(arg) {
return typeof arg === 'function';
}
exports.isFunction = isFunction;
function isPrimitive(arg) {
return arg === null ||
typeof arg === 'boolean' ||
typeof arg === 'number' ||
typeof arg === 'string' ||
typeof arg === 'symbol' || // ES6 symbol
typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;
exports.isBuffer = Buffer.isBuffer;
function objectToString(o) {
return Object.prototype.toString.call(o);
}
}).call(this,{"isBuffer":require("../../insert-module-globals/node_modules/is-buffer/index.js")})
},{"../../insert-module-globals/node_modules/is-buffer/index.js":30}],11:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
var objectCreate = Object.create || objectCreatePolyfill
var objectKeys = Object.keys || objectKeysPolyfill
var bind = Function.prototype.bind || functionBindPolyfill
function EventEmitter() {
if (!this._events || !Object.prototype.hasOwnProperty.call(this, '_events')) {
this._events = objectCreate(null);
this._eventsCount = 0;
}
this._maxListeners = this._maxListeners || undefined;
}
module.exports = EventEmitter;
// Backwards-compat with node 0.10.x
EventEmitter.EventEmitter = EventEmitter;
EventEmitter.prototype._events = undefined;
EventEmitter.prototype._maxListeners = undefined;
// By default EventEmitters will print a warning if more than 10 listeners are
// added to it. This is a useful default which helps finding memory leaks.
var defaultMaxListeners = 10;
var hasDefineProperty;
try {
var o = {};
if (Object.defineProperty) Object.defineProperty(o, 'x', { value: 0 });
hasDefineProperty = o.x === 0;
} catch (err) { hasDefineProperty = false }
if (hasDefineProperty) {
Object.defineProperty(EventEmitter, 'defaultMaxListeners', {
enumerable: true,
get: function() {
return defaultMaxListeners;
},
set: function(arg) {
// check whether the input is a positive number (whose value is zero or
// greater and not a NaN).
if (typeof arg !== 'number' || arg < 0 || arg !== arg)
throw new TypeError('"defaultMaxListeners" must be a positive number');
defaultMaxListeners = arg;
}
});
} else {
EventEmitter.defaultMaxListeners = defaultMaxListeners;
}
// Obviously not all Emitters should be limited to 10. This function allows
// that to be increased. Set to zero for unlimited.
EventEmitter.prototype.setMaxListeners = function setMaxListeners(n) {
if (typeof n !== 'number' || n < 0 || isNaN(n))
throw new TypeError('"n" argument must be a positive number');
this._maxListeners = n;
return this;
};
function $getMaxListeners(that) {
if (that._maxListeners === undefined)
return EventEmitter.defaultMaxListeners;
return that._maxListeners;
}
EventEmitter.prototype.getMaxListeners = function getMaxListeners() {
return $getMaxListeners(this);
};
// These standalone emit* functions are used to optimize calling of event
// handlers for fast cases because emit() itself often has a variable number of
// arguments and can be deoptimized because of that. These functions always have
// the same number of arguments and thus do not get deoptimized, so the code
// inside them can execute faster.
function emitNone(handler, isFn, self) {
if (isFn)
handler.call(self);
else {
var len = handler.length;
var listeners = arrayClone(handler, len);
for (var i = 0; i < len; ++i)
listeners[i].call(self);
}
}
function emitOne(handler, isFn, self, arg1) {
if (isFn)
handler.call(self, arg1);
else {
var len = handler.length;
var listeners = arrayClone(handler, len);
for (var i = 0; i < len; ++i)
listeners[i].call(self, arg1);
}
}
function emitTwo(handler, isFn, self, arg1, arg2) {
if (isFn)
handler.call(self, arg1, arg2);
else {
var len = handler.length;
var listeners = arrayClone(handler, len);
for (var i = 0; i < len; ++i)
listeners[i].call(self, arg1, arg2);
}
}
function emitThree(handler, isFn, self, arg1, arg2, arg3) {
if (isFn)
handler.call(self, arg1, arg2, arg3);
else {
var len = handler.length;
var listeners = arrayClone(handler, len);
for (var i = 0; i < len; ++i)
listeners[i].call(self, arg1, arg2, arg3);
}
}
function emitMany(handler, isFn, self, args) {
if (isFn)
handler.apply(self, args);
else {
var len = handler.length;
var listeners = arrayClone(handler, len);
for (var i = 0; i < len; ++i)
listeners[i].apply(self, args);
}
}
EventEmitter.prototype.emit = function emit(type) {
var er, handler, len, args, i, events;
var doError = (type === 'error');
events = this._events;
if (events)
doError = (doError && events.error == null);
else if (!doError)
return false;
// If there is no 'error' event listener then throw.
if (doError) {
if (arguments.length > 1)
er = arguments[1];
if (er instanceof Error) {
throw er; // Unhandled 'error' event
} else {
// At least give some kind of context to the user
var err = new Error('Unhandled "error" event. (' + er + ')');
err.context = er;
throw err;
}
return false;
}
handler = events[type];
if (!handler)
return false;
var isFn = typeof handler === 'function';
len = arguments.length;
switch (len) {
// fast cases
case 1:
emitNone(handler, isFn, this);
break;
case 2:
emitOne(handler, isFn, this, arguments[1]);
break;
case 3:
emitTwo(handler, isFn, this, arguments[1], arguments[2]);
break;
case 4:
emitThree(handler, isFn, this, arguments[1], arguments[2], arguments[3]);
break;
// slower
default:
args = new Array(len - 1);
for (i = 1; i < len; i++)
args[i - 1] = arguments[i];
emitMany(handler, isFn, this, args);
}
return true;
};
function _addListener(target, type, listener, prepend) {
var m;
var events;
var existing;
if (typeof listener !== 'function')
throw new TypeError('"listener" argument must be a function');
events = target._events;
if (!events) {
events = target._events = objectCreate(null);
target._eventsCount = 0;
} else {
// To avoid recursion in the case that type === "newListener"! Before
// adding it to the listeners, first emit "newListener".
if (events.newListener) {
target.emit('newListener', type,
listener.listener ? listener.listener : listener);
// Re-assign `events` because a newListener handler could have caused the
// this._events to be assigned to a new object
events = target._events;
}
existing = events[type];
}
if (!existing) {
// Optimize the case of one listener. Don't need the extra array object.
existing = events[type] = listener;
++target._eventsCount;
} else {
if (typeof existing === 'function') {
// Adding the second element, need to change to array.
existing = events[type] =
prepend ? [listener, existing] : [existing, listener];
} else {
// If we've already got an array, just append.
if (prepend) {
existing.unshift(listener);
} else {
existing.push(listener);
}
}
// Check for listener leak
if (!existing.warned) {
m = $getMaxListeners(target);
if (m && m > 0 && existing.length > m) {
existing.warned = true;
var w = new Error('Possible EventEmitter memory leak detected. ' +
existing.length + ' "' + String(type) + '" listeners ' +
'added. Use emitter.setMaxListeners() to ' +
'increase limit.');
w.name = 'MaxListenersExceededWarning';
w.emitter = target;
w.type = type;
w.count = existing.length;
if (typeof console === 'object' && console.warn) {
console.warn('%s: %s', w.name, w.message);
}
}
}
}
return target;
}
EventEmitter.prototype.addListener = function addListener(type, listener) {
return _addListener(this, type, listener, false);
};
EventEmitter.prototype.on = EventEmitter.prototype.addListener;
EventEmitter.prototype.prependListener =
function prependListener(type, listener) {
return _addListener(this, type, listener, true);
};
function onceWrapper() {
if (!this.fired) {
this.target.removeListener(this.type, this.wrapFn);
this.fired = true;
switch (arguments.length) {
case 0:
return this.listener.call(this.target);
case 1:
return this.listener.call(this.target, arguments[0]);
case 2:
return this.listener.call(this.target, arguments[0], arguments[1]);
case 3:
return this.listener.call(this.target, arguments[0], arguments[1],
arguments[2]);
default:
var args = new Array(arguments.length);
for (var i = 0; i < args.length; ++i)
args[i] = arguments[i];
this.listener.apply(this.target, args);
}
}
}
function _onceWrap(target, type, listener) {
var state = { fired: false, wrapFn: undefined, target: target, type: type, listener: listener };
var wrapped = bind.call(onceWrapper, state);
wrapped.listener = listener;
state.wrapFn = wrapped;
return wrapped;
}
EventEmitter.prototype.once = function once(type, listener) {
if (typeof listener !== 'function')
throw new TypeError('"listener" argument must be a function');
this.on(type, _onceWrap(this, type, listener));
return this;
};
EventEmitter.prototype.prependOnceListener =
function prependOnceListener(type, listener) {
if (typeof listener !== 'function')
throw new TypeError('"listener" argument must be a function');
this.prependListener(type, _onceWrap(this, type, listener));
return this;
};
// Emits a 'removeListener' event if and only if the listener was removed.
EventEmitter.prototype.removeListener =
function removeListener(type, listener) {
var list, events, position, i, originalListener;
if (typeof listener !== 'function')
throw new TypeError('"listener" argument must be a function');
events = this._events;
if (!events)
return this;
list = events[type];
if (!list)
return this;
if (list === listener || list.listener === listener) {
if (--this._eventsCount === 0)
this._events = objectCreate(null);
else {
delete events[type];
if (events.removeListener)
this.emit('removeListener', type, list.listener || listener);
}
} else if (typeof list !== 'function') {
position = -1;
for (i = list.length - 1; i >= 0; i--) {
if (list[i] === listener || list[i].listener === listener) {
originalListener = list[i].listener;
position = i;
break;
}
}
if (position < 0)
return this;
if (position === 0)
list.shift();
else
spliceOne(list, position);
if (list.length === 1)
events[type] = list[0];
if (events.removeListener)
this.emit('removeListener', type, originalListener || listener);
}
return this;
};
EventEmitter.prototype.removeAllListeners =
function removeAllListeners(type) {
var listeners, events, i;
events = this._events;
if (!events)
return this;
// not listening for removeListener, no need to emit
if (!events.removeListener) {
if (arguments.length === 0) {
this._events = objectCreate(null);
this._eventsCount = 0;
} else if (events[type]) {
if (--this._eventsCount === 0)
this._events = objectCreate(null);
else
delete events[type];
}
return this;
}
// emit removeListener for all listeners on all events
if (arguments.length === 0) {
var keys = objectKeys(events);
var key;
for (i = 0; i < keys.length; ++i) {
key = keys[i];
if (key === 'removeListener') continue;
this.removeAllListeners(key);
}
this.removeAllListeners('removeListener');
this._events = objectCreate(null);
this._eventsCount = 0;
return this;
}
listeners = events[type];
if (typeof listeners === 'function') {
this.removeListener(type, listeners);
} else if (listeners) {
// LIFO order
for (i = listeners.length - 1; i >= 0; i--) {
this.removeListener(type, listeners[i]);
}
}
return this;
};
function _listeners(target, type, unwrap) {
var events = target._events;
if (!events)
return [];
var evlistener = events[type];
if (!evlistener)
return [];
if (typeof evlistener === 'function')
return unwrap ? [evlistener.listener || evlistener] : [evlistener];
return unwrap ? unwrapListeners(evlistener) : arrayClone(evlistener, evlistener.length);
}
EventEmitter.prototype.listeners = function listeners(type) {
return _listeners(this, type, true);
};
EventEmitter.prototype.rawListeners = function rawListeners(type) {
return _listeners(this, type, false);
};
EventEmitter.listenerCount = function(emitter, type) {
if (typeof emitter.listenerCount === 'function') {
return emitter.listenerCount(type);
} else {
return listenerCount.call(emitter, type);
}
};
EventEmitter.prototype.listenerCount = listenerCount;
function listenerCount(type) {
var events = this._events;
if (events) {
var evlistener = events[type];
if (typeof evlistener === 'function') {
return 1;
} else if (evlistener) {
return evlistener.length;
}
}
return 0;
}
EventEmitter.prototype.eventNames = function eventNames() {
return this._eventsCount > 0 ? Reflect.ownKeys(this._events) : [];
};
// About 1.5x faster than the two-arg version of Array#splice().
function spliceOne(list, index) {
for (var i = index, k = i + 1, n = list.length; k < n; i += 1, k += 1)
list[i] = list[k];
list.pop();
}
function arrayClone(arr, n) {
var copy = new Array(n);
for (var i = 0; i < n; ++i)
copy[i] = arr[i];
return copy;
}
function unwrapListeners(arr) {
var ret = new Array(arr.length);
for (var i = 0; i < ret.length; ++i) {
ret[i] = arr[i].listener || arr[i];
}
return ret;
}
function objectCreatePolyfill(proto) {
var F = function() {};
F.prototype = proto;
return new F;
}
function objectKeysPolyfill(obj) {
var keys = [];
for (var k in obj) if (Object.prototype.hasOwnProperty.call(obj, k)) {
keys.push(k);
}
return k;
}
function functionBindPolyfill(context) {
var fn = this;
return function () {
return fn.apply(context, arguments);
};
}
},{}],12:[function(require,module,exports){
exports.Scalar = require("./src/scalar");
exports.PolField = require("./src/polfield.js");
exports.F1Field = require("./src/f1field");
exports.F2Field = require("./src/f2field");
exports.F3Field = require("./src/f3field");
exports.ZqField = exports.F1Field;
exports.EC = require("./src/ec");
exports.bn128 = require("./src/bn128.js");
exports.utils = require("./src/utils");
},{"./src/bn128.js":13,"./src/ec":14,"./src/f1field":15,"./src/f2field":18,"./src/f3field":19,"./src/polfield.js":21,"./src/scalar":22,"./src/utils":25}],13:[function(require,module,exports){
/*
Copyright 2018 0kims association.
This file is part of snarkjs.
snarkjs is a free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your option)
any later version.
snarkjs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
snarkjs. If not, see <https://www.gnu.org/licenses/>.
*/
const Scalar = require("./scalar");
const F1Field = require("./f1field");
const F2Field = require("./f2field");
const F3Field = require("./f3field");
const EC = require("./ec.js");
class BN128 {
constructor() {
this.q = Scalar.fromString("21888242871839275222246405745257275088696311157297823662689037894645226208583");
this.r = Scalar.fromString("21888242871839275222246405745257275088548364400416034343698204186575808495617");
this.F1 = new F1Field(this.q);
this.nonResidueF2 = this.F1.e("21888242871839275222246405745257275088696311157297823662689037894645226208582");
this.F2 = new F2Field(this.F1, this.nonResidueF2);
this.g1 = [ this.F1.e(1), this.F1.e(2), this.F1.e(1)];
this.g2 = [
[
this.F1.e("10857046999023057135944570762232829481370756359578518086990519993285655852781"),
this.F1.e("11559732032986387107991004021392285783925812861821192530917403151452391805634")
],
[
this.F1.e("8495653923123431417604973247489272438418190587263600148770280649306958101930"),
this.F1.e("4082367875863433681332203403145435568316851327593401208105741076214120093531")
],
[
this.F1.e("1"),
this.F1.e("0")
]
];
this.G1 = new EC(this.F1, this.g1);
this.G2 = new EC(this.F2, this.g2);
this.nonResidueF6 = [ this.F1.e("9"), this.F1.e("1") ];
this.F6 = new F3Field(this.F2, this.nonResidueF6);
this.F12 = new F2Field(this.F6, this.nonResidueF6);
this.Fr = new F1Field(this.r);
const self = this;
this.F12._mulByNonResidue = function(a) {
return [self.F2.mul(this.nonResidue, a[2]), a[0], a[1]];
};
this._preparePairing();
}
_preparePairing() {
this.loopCount = Scalar.fromString("29793968203157093288");// CONSTANT
// Set loopCountNeg
if (Scalar.isNegative(this.loopCount)) {
this.loopCount = this.loopCount.neg();
this.loopCountNeg = true;
} else {
this.loopCountNeg = false;
}
// Set loop_count_bits
let lc = this.loopCount;
this.loop_count_bits = []; // Constant
while (!Scalar.isZero(lc)) {
this.loop_count_bits.push( Scalar.isOdd(lc) );
lc = Scalar.shiftRight(lc, 1);
}
this.two_inv = this.F1.inv(this.F1.e(2));
this.coef_b = this.F1.e(3);
this.twist = [this.F1.e(9) , this.F1.e(1)];
this.twist_coeff_b = this.F2.mulScalar( this.F2.inv(this.twist), this.coef_b );
this.frobenius_coeffs_c1_1 = this.F1.e("21888242871839275222246405745257275088696311157297823662689037894645226208582");
this.twist_mul_by_q_X =
[
this.F1.e("21575463638280843010398324269430826099269044274347216827212613867836435027261"),
this.F1.e("10307601595873709700152284273816112264069230130616436755625194854815875713954")
];
this.twist_mul_by_q_Y =
[
this.F1.e("2821565182194536844548159561693502659359617185244120367078079554186484126554"),
this.F1.e("3505843767911556378687030309984248845540243509899259641013678093033130930403")
];
this.final_exponent = Scalar.fromString("552484233613224096312617126783173147097382103762957654188882734314196910839907541213974502761540629817009608548654680343627701153829446747810907373256841551006201639677726139946029199968412598804882391702273019083653272047566316584365559776493027495458238373902875937659943504873220554161550525926302303331747463515644711876653177129578303191095900909191624817826566688241804408081892785725967931714097716709526092261278071952560171111444072049229123565057483750161460024353346284167282452756217662335528813519139808291170539072125381230815729071544861602750936964829313608137325426383735122175229541155376346436093930287402089517426973178917569713384748081827255472576937471496195752727188261435633271238710131736096299798168852925540549342330775279877006784354801422249722573783561685179618816480037695005515426162362431072245638324744480");
}
pairing(p1, p2) {
const pre1 = this.precomputeG1(p1);
const pre2 = this.precomputeG2(p2);
const r1 = this.millerLoop(pre1, pre2);
const res = this.finalExponentiation(r1);
return res;
}
precomputeG1(p) {
const Pcopy = this.G1.affine(p);
const res = {};
res.PX = Pcopy[0];
res.PY = Pcopy[1];
return res;
}
precomputeG2(p) {
const Qcopy = this.G2.affine(p);
const res = {
QX: Qcopy[0],
QY: Qcopy[1],
coeffs: []
};
const R = {
X: Qcopy[0],
Y: Qcopy[1],
Z: this.F2.one
};
let c;
for (let i = this.loop_count_bits.length-2; i >= 0; --i)
{
const bit = this.loop_count_bits[i];
c = this._doubleStep(R);
res.coeffs.push(c);
if (bit)
{
c = this._addStep(Qcopy, R);
res.coeffs.push(c);
}
}
const Q1 = this.G2.affine(this._g2MulByQ(Qcopy));
if (!this.F2.eq(Q1[2], this.F2.one))
{
throw new Error("Expected values are not equal");
}
const Q2 = this.G2.affine(this._g2MulByQ(Q1));
if (!this.F2.eq(Q2[2], this.F2.one))
{
throw new Error("Expected values are not equal");
}
if (this.loopCountNeg)
{
R.Y = this.F2.neg(R.Y);
}
Q2[1] = this.F2.neg(Q2[1]);
c = this._addStep(Q1, R);
res.coeffs.push(c);
c = this._addStep(Q2, R);
res.coeffs.push(c);
return res;
}
millerLoop(pre1, pre2) {
let f = this.F12.one;
let idx = 0;
let c;
for (let i = this.loop_count_bits.length-2; i >= 0; --i)
{
const bit = this.loop_count_bits[i];
/* code below gets executed for all bits (EXCEPT the MSB itself) of
alt_bn128_param_p (skipping leading zeros) in MSB to LSB
order */
c = pre2.coeffs[idx++];
f = this.F12.square(f);
f = this._mul_by_024(
f,
c.ell_0,
this.F2.mulScalar(c.ell_VW , pre1.PY),
this.F2.mulScalar(c.ell_VV , pre1.PX));
if (bit)
{
c = pre2.coeffs[idx++];
f = this._mul_by_024(
f,
c.ell_0,
this.F2.mulScalar(c.ell_VW, pre1.PY),
this.F2.mulScalar(c.ell_VV, pre1.PX));
}
}
if (this.loopCountNeg)
{
f = this.F12.inverse(f);
}
c = pre2.coeffs[idx++];
f = this._mul_by_024(
f,
c.ell_0,
this.F2.mulScalar(c.ell_VW, pre1.PY),
this.F2.mulScalar(c.ell_VV, pre1.PX));
c = pre2.coeffs[idx++];
f = this._mul_by_024(
f,
c.ell_0,
this.F2.mulScalar(c.ell_VW, pre1.PY),
this.F2.mulScalar(c.ell_VV, pre1.PX));
return f;
}
finalExponentiation(elt) {
// TODO: There is an optimization in FF
const res = this.F12.exp(elt,this.final_exponent);
return res;
}
_doubleStep(current) {
const X = current.X;
const Y = current.Y;
const Z = current.Z;
const A = this.F2.mulScalar(this.F2.mul(X,Y), this.two_inv); // A = X1 * Y1 / 2
const B = this.F2.square(Y); // B = Y1^2
const C = this.F2.square(Z); // C = Z1^2
const D = this.F2.add(C, this.F2.add(C,C)); // D = 3 * C
const E = this.F2.mul(this.twist_coeff_b, D); // E = twist_b * D
const F = this.F2.add(E, this.F2.add(E,E)); // F = 3 * E
const G =
this.F2.mulScalar(
this.F2.add( B , F ),
this.two_inv); // G = (B+F)/2
const H =
this.F2.sub(
this.F2.square( this.F2.add(Y,Z) ),
this.F2.add( B , C)); // H = (Y1+Z1)^2-(B+C)
const I = this.F2.sub(E, B); // I = E-B
const J = this.F2.square(X); // J = X1^2
const E_squared = this.F2.square(E); // E_squared = E^2
current.X = this.F2.mul( A, this.F2.sub(B,F) ); // X3 = A * (B-F)
current.Y =
this.F2.sub(
this.F2.sub( this.F2.square(G) , E_squared ),
this.F2.add( E_squared , E_squared )); // Y3 = G^2 - 3*E^2
current.Z = this.F2.mul( B, H ); // Z3 = B * H
const c = {
ell_0 : this.F2.mul( I, this.twist), // ell_0 = xi * I
ell_VW: this.F2.neg( H ), // ell_VW = - H (later: * yP)
ell_VV: this.F2.add( J , this.F2.add(J,J) ) // ell_VV = 3*J (later: * xP)
};
return c;
}
_addStep(base, current) {
const X1 = current.X;
const Y1 = current.Y;
const Z1 = current.Z;
const x2 = base[0];
const y2 = base[1];
const D = this.F2.sub( X1, this.F2.mul(x2,Z1) ); // D = X1 - X2*Z1
// console.log("Y: "+ A[0].affine(this.q).toString(16));
const E = this.F2.sub( Y1, this.F2.mul(y2,Z1) ); // E = Y1 - Y2*Z1
const F = this.F2.square(D); // F = D^2
const G = this.F2.square(E); // G = E^2
const H = this.F2.mul(D,F); // H = D*F
const I = this.F2.mul(X1,F); // I = X1 * F
const J =
this.F2.sub(
this.F2.add( H, this.F2.mul(Z1,G) ),
this.F2.add( I, I )); // J = H + Z1*G - (I+I)
current.X = this.F2.mul( D , J ); // X3 = D*J
current.Y =
this.F2.sub(
this.F2.mul( E , this.F2.sub(I,J) ),
this.F2.mul( H , Y1)); // Y3 = E*(I-J)-(H*Y1)
current.Z = this.F2.mul(Z1,H);
const c = {
ell_0 :
this.F2.mul(
this.twist,
this.F2.sub(
this.F2.mul(E , x2),
this.F2.mul(D , y2))), // ell_0 = xi * (E * X2 - D * Y2)
ell_VV : this.F2.neg(E), // ell_VV = - E (later: * xP)
ell_VW : D // ell_VW = D (later: * yP )
};
return c;
}
_mul_by_024(a, ell_0, ell_VW, ell_VV) {
// Old implementation
/*
const b = [
[ell_0, this.F2.zero, ell_VV],
[this.F2.zero, ell_VW, this.F2.zero]
];
return this.F12.mul(a,b);
*/
// This is a new implementation,
// But it does not look worthy
// at least in javascript.
let z0 = a[0][0];
let z1 = a[0][1];
let z2 = a[0][2];
let z3 = a[1][0];
let z4 = a[1][1];
let z5 = a[1][2];
const x0 = ell_0;
const x2 = ell_VV;
const x4 = ell_VW;
const D0 = this.F2.mul(z0, x0);
const D2 = this.F2.mul(z2, x2);
const D4 = this.F2.mul(z4, x4);
const t2 = this.F2.add(z0, z4);
let t1 = this.F2.add(z0, z2);
const s0 = this.F2.add(this.F2.add(z1,z3),z5);
// For z.a_.a_ = z0.
let S1 = this.F2.mul(z1, x2);
let T3 = this.F2.add(S1, D4);
let T4 = this.F2.add( this.F2.mul(this.nonResidueF6, T3),D0);
z0 = T4;
// For z.a_.b_ = z1
T3 = this.F2.mul(z5, x4);
S1 = this.F2.add(S1, T3);
T3 = this.F2.add(T3, D2);
T4 = this.F2.mul(this.nonResidueF6, T3);
T3 = this.F2.mul(z1, x0);
S1 = this.F2.add(S1, T3);
T4 = this.F2.add(T4, T3);
z1 = T4;
// For z.a_.c_ = z2
let t0 = this.F2.add(x0, x2);
T3 = this.F2.sub(
this.F2.mul(t1, t0),
this.F2.add(D0, D2));
T4 = this.F2.mul(z3, x4);
S1 = this.F2.add(S1, T4);
// For z.b_.a_ = z3 (z3 needs z2)
t0 = this.F2.add(z2, z4);
z2 = this.F2.add(T3, T4);
t1 = this.F2.add(x2, x4);
T3 = this.F2.sub(
this.F2.mul(t0,t1),
this.F2.add(D2, D4));
T4 = this.F2.mul(this.nonResidueF6, T3);
T3 = this.F2.mul(z3, x0);
S1 = this.F2.add(S1, T3);
T4 = this.F2.add(T4, T3);
z3 = T4;
// For z.b_.b_ = z4
T3 = this.F2.mul(z5, x2);
S1 = this.F2.add(S1, T3);
T4 = this.F2.mul(this.nonResidueF6, T3);
t0 = this.F2.add(x0, x4);
T3 = this.F2.sub(
this.F2.mul(t2,t0),
this.F2.add(D0, D4));
T4 = this.F2.add(T4, T3);
z4 = T4;
// For z.b_.c_ = z5.
t0 = this.F2.add(this.F2.add(x0, x2), x4);
T3 = this.F2.sub(this.F2.mul(s0, t0), S1);
z5 = T3;
return [
[z0, z1, z2],
[z3, z4, z5]
];
}
_g2MulByQ(p) {
const fmx = [p[0][0], this.F1.mul(p[0][1], this.frobenius_coeffs_c1_1 )];
const fmy = [p[1][0], this.F1.mul(p[1][1], this.frobenius_coeffs_c1_1 )];
const fmz = [p[2][0], this.F1.mul(p[2][1], this.frobenius_coeffs_c1_1 )];
return [
this.F2.mul(this.twist_mul_by_q_X , fmx),
this.F2.mul(this.twist_mul_by_q_Y , fmy),
fmz
];
}
}
module.exports = new BN128();
},{"./ec.js":14,"./f1field":15,"./f2field":18,"./f3field":19,"./scalar":22}],14:[function(require,module,exports){
/*
Copyright 2018 0kims association.
This file is part of snarkjs.
snarkjs is a free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your option)
any later version.
snarkjs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
snarkjs. If not, see <https://www.gnu.org/licenses/>.
*/
const fUtils = require("./futils.js");
class EC {
constructor(F, g) {
this.F = F;
this.g = g;
if (this.g.length == 2) this.g[2] = this.F.one;
this.zero = [this.F.zero, this.F.one, this.F.zero];
}
add(p1, p2) {
const F = this.F;
if (this.eq(p1, this.zero)) return p2;
if (this.eq(p2, this.zero)) return p1;
const res = new Array(3);
const Z1Z1 = F.square( p1[2] );
const Z2Z2 = F.square( p2[2] );
const U1 = F.mul( p1[0] , Z2Z2 ); // U1 = X1 * Z2Z2
const U2 = F.mul( p2[0] , Z1Z1 ); // U2 = X2 * Z1Z1
const Z1_cubed = F.mul( p1[2] , Z1Z1);
const Z2_cubed = F.mul( p2[2] , Z2Z2);
const S1 = F.mul( p1[1] , Z2_cubed); // S1 = Y1 * Z2 * Z2Z2
const S2 = F.mul( p2[1] , Z1_cubed); // S2 = Y2 * Z1 * Z1Z1
if (F.eq(U1,U2) && F.eq(S1,S2)) {
return this.double(p1);
}
const H = F.sub( U2 , U1 ); // H = U2-U1
const S2_minus_S1 = F.sub( S2 , S1 );
const I = F.square( F.add(H,H) ); // I = (2 * H)^2
const J = F.mul( H , I ); // J = H * I
const r = F.add( S2_minus_S1 , S2_minus_S1 ); // r = 2 * (S2-S1)
const V = F.mul( U1 , I ); // V = U1 * I
res[0] =
F.sub(
F.sub( F.square(r) , J ),
F.add( V , V )); // X3 = r^2 - J - 2 * V
const S1_J = F.mul( S1 , J );
res[1] =
F.sub(
F.mul( r , F.sub(V,res[0])),
F.add( S1_J,S1_J )); // Y3 = r * (V-X3)-2 S1 J
res[2] =
F.mul(
H,
F.sub(
F.square( F.add(p1[2],p2[2]) ),
F.add( Z1Z1 , Z2Z2 ))); // Z3 = ((Z1+Z2)^2-Z1Z1-Z2Z2) * H
return res;
}
neg(p) {
return [p[0], this.F.neg(p[1]), p[2]];
}
sub(a, b) {
return this.add(a, this.neg(b));
}
double(p) {
const F = this.F;
const res = new Array(3);
if (this.eq(p, this.zero)) return p;
const A = F.square( p[0] ); // A = X1^2
const B = F.square( p[1] ); // B = Y1^2
const C = F.square( B ); // C = B^2
let D =
F.sub(
F.square( F.add(p[0] , B )),
F.add( A , C));
D = F.add(D,D); // D = 2 * ((X1 + B)^2 - A - C)
const E = F.add( F.add(A,A), A); // E = 3 * A
const FF =F.square( E ); // F = E^2
res[0] = F.sub( FF , F.add(D,D) ); // X3 = F - 2 D
let eightC = F.add( C , C );
eightC = F.add( eightC , eightC );
eightC = F.add( eightC , eightC );
res[1] =
F.sub(
F.mul(
E,
F.sub( D, res[0] )),
eightC); // Y3 = E * (D - X3) - 8 * C
const Y1Z1 = F.mul( p[1] , p[2] );
res[2] = F.add( Y1Z1 , Y1Z1 ); // Z3 = 2 * Y1 * Z1
return res;
}
mulScalar(base, e) {
return fUtils.mulScalar(this, base, e);
}
affine(p) {
const F = this.F;
if (this.eq(p, this.zero)) {
return this.zero;
} else {
const Z_inv = F.inv(p[2]);
const Z2_inv = F.square(Z_inv);
const Z3_inv = F.mul(Z2_inv, Z_inv);
const res = new Array(3);
res[0] = F.mul(p[0],Z2_inv);
res[1] = F.mul(p[1],Z3_inv);
res[2] = F.one;
return res;
}
}
multiAffine(arr) {
const keys = Object.keys(arr);
const F = this.F;
const accMul = new Array(keys.length+1);
accMul[0] = F.one;
for (let i = 0; i< keys.length; i++) {
if (F.eq(arr[keys[i]][2], F.zero)) {
accMul[i+1] = accMul[i];
} else {
accMul[i+1] = F.mul(accMul[i], arr[keys[i]][2]);
}
}
accMul[keys.length] = F.inv(accMul[keys.length]);
for (let i = keys.length-1; i>=0; i--) {
if (F.eq(arr[keys[i]][2], F.zero)) {
accMul[i] = accMul[i+1];
arr[keys[i]] = this.zero;
} else {
const Z_inv = F.mul(accMul[i], accMul[i+1]);
accMul[i] = F.mul(arr[keys[i]][2], accMul[i+1]);
const Z2_inv = F.square(Z_inv);
const Z3_inv = F.mul(Z2_inv, Z_inv);
arr[keys[i]][0] = F.mul(arr[keys[i]][0],Z2_inv);
arr[keys[i]][1] = F.mul(arr[keys[i]][1],Z3_inv);
arr[keys[i]][2] = F.one;
}
}
}
eq(p1, p2) {
const F = this.F;
if (this.F.eq(p1[2], this.F.zero)) return this.F.eq(p2[2], this.F.zero);
if (this.F.eq(p2[2], this.F.zero)) return false;
const Z1Z1 = F.square( p1[2] );
const Z2Z2 = F.square( p2[2] );
const U1 = F.mul( p1[0] , Z2Z2 );
const U2 = F.mul( p2[0] , Z1Z1 );
const Z1_cubed = F.mul( p1[2] , Z1Z1);
const Z2_cubed = F.mul( p2[2] , Z2Z2);
const S1 = F.mul( p1[1] , Z2_cubed);
const S2 = F.mul( p2[1] , Z1_cubed);
return (F.eq(U1,U2) && F.eq(S1,S2));
}
toString(p) {
const cp = this.affine(p);
return `[ ${this.F.toString(cp[0])} , ${this.F.toString(cp[1])} ]`;
}
}
module.exports = EC;
},{"./futils.js":20}],15:[function(require,module,exports){
const supportsNativeBigInt = typeof BigInt === "function";
if (supportsNativeBigInt) {
module.exports = require("./f1field_native");
} else {
module.exports = require("./f1field_bigint");
}
},{"./f1field_bigint":16,"./f1field_native":17}],16:[function(require,module,exports){
const bigInt = require("big-integer");
const assert = require("assert");
function getRandomByte() {
if (typeof window !== "undefined") { // Browser
if (typeof window.crypto !== "undefined") { // Supported
let array = new Uint8Array(1);
window.crypto.getRandomValues(array);
return array[0];
}
else { // fallback
return Math.floor(Math.random() * 256);
}
}
else { // NodeJS
return module.require("crypto").randomBytes(1)[0];
}
}
module.exports = class ZqField {
constructor(p) {
this.one = bigInt.one;
this.zero = bigInt.zero;
this.p = bigInt(p);
this.minusone = this.p.minus(bigInt.one);
this.two = bigInt(2);
this.half = this.p.shiftRight(1);
this.bitLength = this.p.bitLength();
this.mask = bigInt.one.shiftLeft(this.bitLength).minus(bigInt.one);
this.n64 = Math.floor((this.bitLength - 1) / 64)+1;
this.R = bigInt.one.shiftLeft(this.n64*64);
const e = this.minusone.shiftRight(this.one);
this.nqr = this.two;
let r = this.pow(this.nqr, e);
while (!r.equals(this.minusone)) {
this.nqr = this.nqr.add(this.one);
r = this.pow(this.nqr, e);
}
this.s = this.zero;
this.t = this.minusone;
while (!this.t.isOdd()) {
this.s = this.s.add(this.one);
this.t = this.t.shiftRight(this.one);
}
this.nqr_to_t = this.pow(this.nqr, this.t);
}
e(a,b) {
const res = bigInt(a,b);
return this.normalize(res);
}
add(a, b) {
let res = a.add(b);
if (res.geq(this.p)) {
res = res.minus(this.p);
}
return res;
}
sub(a, b) {
if (a.geq(b)) {
return a.minus(b);
} else {
return this.p.minus(b.minus(a));
}
}
neg(a) {
if (a.isZero()) return a;
return this.p.minus(a);
}
mul(a, b) {
return a.times(b).mod(this.p);
}
mulScalar(base, s) {
return base.times(bigInt(s)).mod(this.p);
}
square(a) {
return a.square().mod(this.p);
}
eq(a, b) {
return a.eq(b);
}
neq(a, b) {
return a.neq(b);
}
lt(a, b) {
const aa = a.gt(this.half) ? a.minus(this.p) : a;
const bb = b.gt(this.half) ? b.minus(this.p) : b;
return aa.lt(bb);
}
gt(a, b) {
const aa = a.gt(this.half) ? a.minus(this.p) : a;
const bb = b.gt(this.half) ? b.minus(this.p) : b;
return aa.gt(bb);
}
leq(a, b) {
const aa = a.gt(this.half) ? a.minus(this.p) : a;
const bb = b.gt(this.half) ? b.minus(this.p) : b;
return aa.leq(bb);
}
geq(a, b) {
const aa = a.gt(this.half) ? a.minus(this.p) : a;
const bb = b.gt(this.half) ? b.minus(this.p) : b;
return aa.geq(bb);
}
div(a, b) {
assert(!b.isZero(), "Division by zero");
return a.times(b.modInv(this.p)).mod(this.p);
}
idiv(a, b) {
assert(!b.isZero(), "Division by zero");
return a.divide(b);
}
inv(a) {
assert(!a.isZero(), "Division by zero");
return a.modInv(this.p);
}
mod(a, b) {
return a.mod(b);
}
pow(a, b) {
return a.modPow(b, this.p);
}
band(a, b) {
return a.and(b).and(this.mask).mod(this.p);
}
bor(a, b) {
return a.or(b).and(this.mask).mod(this.p);
}
bxor(a, b) {
return a.xor(b).and(this.mask).mod(this.p);
}
bnot(a) {
return a.xor(this.mask).mod(this.p);
}
shl(a, b) {
if (b.lt(this.bitLength)) {
return a.shiftLeft(b).and(this.mask).mod(this.p);
} else {
const nb = this.p.minus(b);
if (nb.lt(this.bitLength)) {
return this.shr(a, nb);
} else {
return bigInt.zero;
}
}
}
shr(a, b) {
if (b.lt(this.bitLength)) {
return a.shiftRight(b);
} else {
const nb = this.p.minus(b);
if (nb.lt(this.bitLength)) {
return this.shl(a, nb);
} else {
return bigInt.zero;
}
}
}
land(a, b) {
return (a.isZero() || b.isZero()) ? bigInt.zero : bigInt.one;
}
lor(a, b) {
return (a.isZero() && b.isZero()) ? bigInt.zero : bigInt.one;
}
lnot(a) {
return a.isZero() ? bigInt.one : bigInt.zero;
}
sqrt(n) {
if (n.equals(this.zero)) return this.zero;
// Test that have solution
const res = this.pow(n, this.minusone.shiftRight(this.one));
if (!res.equals(this.one)) return null;
let m = parseInt(this.s);
let c = this.nqr_to_t;
let t = this.pow(n, this.t);
let r = this.pow(n, this.add(this.t, this.one).shiftRight(this.one) );
while (!t.equals(this.one)) {
let sq = this.square(t);
let i = 1;
while (!sq.equals(this.one)) {
i++;
sq = this.square(sq);
}
// b = c ^ m-i-1
let b = c;
for (let j=0; j< m-i-1; j ++) b = this.square(b);
m = i;
c = this.square(b);
t = this.mul(t, c);
r = this.mul(r, b);
}
if (r.greater(this.p.shiftRight(this.one))) {
r = this.neg(r);
}
return r;
}
normalize(a) {
a = bigInt(a);
if (a.isNegative()) {
return this.p.minus(a.abs().mod(this.p));
} else {
return a.mod(this.p);
}
}
random() {
let res = bigInt(0);
let n = bigInt(this.p.square());
while (!n.isZero()) {
res = res.shiftLeft(8).add(bigInt(getRandomByte()));
n = n.shiftRight(8);
}
return res.mod(this.p);
}
toString(a, base) {
let vs;
if (!a.lesserOrEquals(this.p.shiftRight(bigInt(1)))) {
const v = this.p.minus(a);
vs = "-"+v.toString(base);
} else {
vs = a.toString(base);
}
return vs;
}
isZero(a) {
return a.isZero();
}
};
},{"assert":1,"big-integer":6}],17:[function(require,module,exports){
/* global BigInt */
const assert = require("assert");
const Scalar = require("./scalar");
const futils = require("./futils");
function getRandomByte() {
if (typeof window !== "undefined") { // Browser
if (typeof window.crypto !== "undefined") { // Supported
let array = new Uint8Array(1);
window.crypto.getRandomValues(array);
return array[0];
}
else { // fallback
return Math.floor(Math.random() * 256);
}
}
else { // NodeJS
return module.require("crypto").randomBytes(1)[0];
}
}
module.exports = class ZqField {
constructor(p) {
this.one = 1n;
this.zero = 0n;
this.p = BigInt(p);
this.minusone = this.p-1n;
this.two = 2n;
this.half = this.p >> 1n;
this.bitLength = Scalar.bitLength(this.p);
this.mask = (1n << BigInt(this.bitLength)) - 1n;
this.n64 = Math.floor((this.bitLength - 1) / 64)+1;
this.R = this.e(1n << BigInt(this.n64*64));
const e = this.minusone >> 1n;
this.nqr = this.two;
let r = this.pow(this.nqr, e);
while (!this.eq(r, this.minusone)) {
this.nqr = this.nqr + 1n;
r = this.pow(this.nqr, e);
}
this.s = 0;
this.t = this.minusone;
while ((this.t & 1n) == 0n) {
this.s = this.s + 1;
this.t = this.t >> 1n;
}
this.nqr_to_t = this.pow(this.nqr, this.t);
}
e(a,b) {
let res;
if (!b) {
res = BigInt(a);
} else if (b==16) {
res = BigInt("0x"+a);
}
if (res < 0) {
let nres = -res;
if (nres >= this.p) nres = nres % this.p;
return this.p - nres;
} else {
return (res>= this.p) ? res%this.p : res;
}
}
add(a, b) {
const res = a + b;
return res >= this.p ? res-this.p : res;
}
sub(a, b) {
return (a >= b) ? a-b : this.p-b+a;
}
neg(a) {
return a ? this.p-a : a;
}
mul(a, b) {
return (a*b)%this.p;
}
mulScalar(base, s) {
return (base * this.e(s)) % this.p;
}
square(a) {
return (a*a) % this.p;
}
eq(a, b) {
return a==b;
}
neq(a, b) {
return a!=b;
}
lt(a, b) {
const aa = (a > this.half) ? a - this.p : a;
const bb = (b > this.half) ? b - this.p : b;
return aa < bb;
}
gt(a, b) {
const aa = (a > this.half) ? a - this.p : a;
const bb = (b > this.half) ? b - this.p : b;
return aa > bb;
}
leq(a, b) {
const aa = (a > this.half) ? a - this.p : a;
const bb = (b > this.half) ? b - this.p : b;
return aa <= bb;
}
geq(a, b) {
const aa = (a > this.half) ? a - this.p : a;
const bb = (b > this.half) ? b - this.p : b;
return aa >= bb;
}
div(a, b) {
return this.mul(a, this.inv(b));
}
idiv(a, b) {
assert(b, "Division by zero");
return a / b;
}
inv(a) {
assert(a, "Division by zero");
let t = 0n;
let r = this.p;
let newt = 1n;
let newr = a % this.p;
while (newr) {
let q = r/newr;
[t, newt] = [newt, t-q*newt];
[r, newr] = [newr, r-q*newr];
}
if (t<0n) t += this.p;
return t;
}
mod(a, b) {
return a % b;
}
pow(b, e) {
return futils.exp(this, b, e);
}
band(a, b) {
const res = ((a & b) & this.mask);
return res >= this.p ? res-this.p : res;
}
bor(a, b) {
const res = ((a | b) & this.mask);
return res >= this.p ? res-this.p : res;
}
bxor(a, b) {
const res = ((a ^ b) & this.mask);
return res >= this.p ? res-this.p : res;
}
bnot(a) {
const res = a ^ this.mask;
return res >= this.p ? res-this.p : res;
}
shl(a, b) {
if (Number(b) < this.bitLength) {
const res = (a << b) & this.mask;
return res >= this.p ? res-this.p : res;
} else {
const nb = this.p - b;
if (Number(nb) < this.bitLength) {
return a >> nb;
} else {
return 0n;
}
}
}
shr(a, b) {
if (Number(b) < this.bitLength) {
return a >> b;
} else {
const nb = this.p - b;
if (Number(nb) < this.bitLength) {
const res = (a << nb) & this.mask;
return res >= this.p ? res-this.p : res;
} else {
return 0;
}
}
}
land(a, b) {
return (a && b) ? 1n : 0n;
}
lor(a, b) {
return (a || b) ? 1n : 0n;
}
lnot(a) {
return (a) ? 0n : 1n;
}
sqrt(n) {
if (n == 0n) return this.zero;
// Test that have solution
const res = this.pow(n, this.minusone >> this.one);
if ( res != 1n ) return null;
let m = this.s;
let c = this.nqr_to_t;
let t = this.pow(n, this.t);
let r = this.pow(n, this.add(this.t, this.one) >> 1n );
while ( t != 1n ) {
let sq = this.square(t);
let i = 1;
while (sq != 1n ) {
i++;
sq = this.square(sq);
}
// b = c ^ m-i-1
let b = c;
for (let j=0; j< m-i-1; j ++) b = this.square(b);
m = i;
c = this.square(b);
t = this.mul(t, c);
r = this.mul(r, b);
}
if (r > (this.p >> 1n)) {
r = this.neg(r);
}
return r;
}
normalize(a, b) {
a = BigInt(a,b);
if (a < 0) {
let na = -a;
if (na >= this.p) na = na % this.p;
return this.p - na;
} else {
return (a>= this.p) ? a%this.p : a;
}
}
random() {
const nBytes = (this.bitLength*2 / 8);
let res =0n;
for (let i=0; i<nBytes; i++) {
res = (res << 8n) + BigInt(getRandomByte());
}
return res % this.p;
}
toString(a, base) {
let vs;
if (a > this.half) {
const v = this.p-a;
vs = "-"+v.toString(base);
} else {
vs = a.toString(base);
}
return vs;
}
isZero(a) {
return a == 0n;
}
};
},{"./futils":20,"./scalar":22,"assert":1}],18:[function(require,module,exports){
/*
Copyright 2018 0kims association.
This file is part of snarkjs.
snarkjs is a free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your option)
any later version.
snarkjs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
snarkjs. If not, see <https://www.gnu.org/licenses/>.
*/
const fUtils = require("./futils.js");
class F2Field {
constructor(F, nonResidue) {
this.F = F;
this.zero = [this.F.zero, this.F.zero];
this.one = [this.F.one, this.F.zero];
this.nonResidue = nonResidue;
}
_mulByNonResidue(a) {
return this.F.mul(this.nonResidue, a);
}
copy(a) {
return [this.F.copy(a[0]), this.F.copy(a[1])];
}
add(a, b) {
return [
this.F.add(a[0], b[0]),
this.F.add(a[1], b[1])
];
}
double(a) {
return this.add(a,a);
}
sub(a, b) {
return [
this.F.sub(a[0], b[0]),
this.F.sub(a[1], b[1])
];
}
neg(a) {
return this.sub(this.zero, a);
}
mul(a, b) {
const aA = this.F.mul(a[0] , b[0]);
const bB = this.F.mul(a[1] , b[1]);
return [
this.F.add( aA , this._mulByNonResidue(bB)),
this.F.sub(
this.F.mul(
this.F.add(a[0], a[1]),
this.F.add(b[0], b[1])),
this.F.add(aA, bB))];
}
inv(a) {
const t0 = this.F.square(a[0]);
const t1 = this.F.square(a[1]);
const t2 = this.F.sub(t0, this._mulByNonResidue(t1));
const t3 = this.F.inv(t2);
return [
this.F.mul(a[0], t3),
this.F.neg(this.F.mul( a[1], t3)) ];
}
div(a, b) {
return this.mul(a, this.inv(b));
}
square(a) {
const ab = this.F.mul(a[0] , a[1]);
/*
[
(a + b) * (a + non_residue * b) - ab - non_residue * ab,
ab + ab
];
*/
return [
this.F.sub(
this.F.mul(
this.F.add(a[0], a[1]) ,
this.F.add(
a[0] ,
this._mulByNonResidue(a[1]))),
this.F.add(
ab,
this._mulByNonResidue(ab))),
this.F.add(ab, ab)
];
}
isZero(a) {
return this.F.isZero(a[0]) && this.F.isZero(a[1]);
}
eq(a, b) {
return this.F.eq(a[0], b[0]) && this.F.eq(a[1], b[1]);
}
mulScalar(base, e) {
return fUtils.mulScalar(this, base, e);
}
exp(base, e) {
return fUtils.exp(this, base, e);
}
toString(a) {
return `[ ${this.F.toString(a[0])} , ${this.F.toString(a[1])} ]`;
}
}
module.exports = F2Field;
},{"./futils.js":20}],19:[function(require,module,exports){
/*
Copyright 2018 0kims association.
This file is part of snarkjs.
snarkjs is a free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your option)
any later version.
snarkjs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
snarkjs. If not, see <https://www.gnu.org/licenses/>.
*/
const fUtils = require("./futils.js");
class F3Field {
constructor(F, nonResidue) {
this.F = F;
this.zero = [this.F.zero, this.F.zero, this.F.zero];
this.one = [this.F.one, this.F.zero, this.F.zero];
this.nonResidue = nonResidue;
}
_mulByNonResidue(a) {
return this.F.mul(this.nonResidue, a);
}
copy(a) {
return [this.F.copy(a[0]), this.F.copy(a[1]), this.F.copy(a[2])];
}
add(a, b) {
return [
this.F.add(a[0], b[0]),
this.F.add(a[1], b[1]),
this.F.add(a[2], b[2])
];
}
double(a) {
return this.add(a,a);
}
sub(a, b) {
return [
this.F.sub(a[0], b[0]),
this.F.sub(a[1], b[1]),
this.F.sub(a[2], b[2])
];
}
neg(a) {
return this.sub(this.zero, a);
}
mul(a, b) {
const aA = this.F.mul(a[0] , b[0]);
const bB = this.F.mul(a[1] , b[1]);
const cC = this.F.mul(a[2] , b[2]);
return [
this.F.add(
aA,
this._mulByNonResidue(
this.F.sub(
this.F.mul(
this.F.add(a[1], a[2]),
this.F.add(b[1], b[2])),
this.F.add(bB, cC)))), // aA + non_residue*((b+c)*(B+C)-bB-cC),
this.F.add(
this.F.sub(
this.F.mul(
this.F.add(a[0], a[1]),
this.F.add(b[0], b[1])),
this.F.add(aA, bB)),
this._mulByNonResidue( cC)), // (a+b)*(A+B)-aA-bB+non_residue*cC
this.F.add(
this.F.sub(
this.F.mul(
this.F.add(a[0], a[2]),
this.F.add(b[0], b[2])),
this.F.add(aA, cC)),
bB)]; // (a+c)*(A+C)-aA+bB-cC)
}
inv(a) {
const t0 = this.F.square(a[0]); // t0 = a^2 ;
const t1 = this.F.square(a[1]); // t1 = b^2 ;
const t2 = this.F.square(a[2]); // t2 = c^2;
const t3 = this.F.mul(a[0],a[1]); // t3 = ab
const t4 = this.F.mul(a[0],a[2]); // t4 = ac
const t5 = this.F.mul(a[1],a[2]); // t5 = bc;
// c0 = t0 - non_residue * t5;
const c0 = this.F.sub(t0, this._mulByNonResidue(t5));
// c1 = non_residue * t2 - t3;
const c1 = this.F.sub(this._mulByNonResidue(t2), t3);
const c2 = this.F.sub(t1, t4); // c2 = t1-t4
// t6 = (a * c0 + non_residue * (c * c1 + b * c2)).inv();
const t6 =
this.F.inv(
this.F.add(
this.F.mul(a[0], c0),
this._mulByNonResidue(
this.F.add(
this.F.mul(a[2], c1),
this.F.mul(a[1], c2)))));
return [
this.F.mul(t6, c0), // t6*c0
this.F.mul(t6, c1), // t6*c1
this.F.mul(t6, c2)]; // t6*c2
}
div(a, b) {
return this.mul(a, this.inv(b));
}
square(a) {
const s0 = this.F.square(a[0]); // s0 = a^2
const ab = this.F.mul(a[0], a[1]); // ab = a*b
const s1 = this.F.add(ab, ab); // s1 = 2ab;
const s2 = this.F.square(
this.F.add(this.F.sub(a[0],a[1]), a[2])); // s2 = (a - b + c)^2;
const bc = this.F.mul(a[1],a[2]); // bc = b*c
const s3 = this.F.add(bc, bc); // s3 = 2*bc
const s4 = this.F.square(a[2]); // s4 = c^2
return [
this.F.add(
s0,
this._mulByNonResidue(s3)), // s0 + non_residue * s3,
this.F.add(
s1,
this._mulByNonResidue(s4)), // s1 + non_residue * s4,
this.F.sub(
this.F.add( this.F.add(s1, s2) , s3 ),
this.F.add(s0, s4))]; // s1 + s2 + s3 - s0 - s4
}
isZero(a) {
return this.F.isZero(a[0]) && this.F.isZero(a[1]) && this.F.isZero(a[2]);
}
eq(a, b) {
return this.F.eq(a[0], b[0]) && this.F.eq(a[1], b[1]) && this.F.eq(a[2], b[2]);
}
affine(a) {
return [this.F.affine(a[0]), this.F.affine(a[1]), this.F.affine(a[2])];
}
mulScalar(base, e) {
return fUtils.mulScalar(this, base, e);
}
exp(base, e) {
return fUtils.exp(this, base, e);
}
toString(a) {
return `[ ${this.F.toString(a[0])} , ${this.F.toString(a[1])}, ${this.F.toString(a[2])} ]`;
}
}
module.exports = F3Field;
},{"./futils.js":20}],20:[function(require,module,exports){
/*
Copyright 2018 0kims association.
This file is part of snarkjs.
snarkjs is a free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your option)
any later version.
snarkjs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
snarkjs. If not, see <https://www.gnu.org/licenses/>.
*/
const Scalar = require("./scalar.js");
const assert = require("assert");
exports.mulScalar = (F, base, e) => {
let res;
if (Scalar.isZero(e)) return F.zero;
const n = Scalar.naf(e);
if (n[n.length-1] == 1) {
res = base;
} else if (n[n.length-1] == -1) {
res = F.neg(base);
} else {
assert(false);
}
for (let i=n.length-2; i>=0; i--) {
res = F.double(res);
if (n[i] == 1) {
res = F.add(res, base);
} else if (n[i] == -1) {
res = F.sub(res, base);
}
}
return res;
};
/*
exports.mulScalar = (F, base, e) =>{
let res = F.zero;
let rem = bigInt(e);
let exp = base;
while (! rem.eq(bigInt.zero)) {
if (rem.and(bigInt.one).eq(bigInt.one)) {
res = F.add(res, exp);
}
exp = F.double(exp);
rem = rem.shiftRight(1);
}
return res;
};
*/
exports.exp = (F, base, e) => {
if (Scalar.isZero(e)) return F.one;
const n = Scalar.bits(e);
if (n.legth==0) return F.one;
let res = base;
for (let i=n.length-2; i>=0; i--) {
res = F.square(res);
if (n[i]) {
res = F.mul(res, base);
}
}
return res;
};
},{"./scalar.js":22,"assert":1}],21:[function(require,module,exports){
/*
Copyright 2018 0kims association.
This file is part of snarkjs.
snarkjs is a free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your option)
any later version.
snarkjs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
snarkjs. If not, see <https://www.gnu.org/licenses/>.
*/
/*
This library does operations on polynomials with coefficients in a field F.
A polynomial P(x) = p0 + p1 * x + p2 * x^2 + ... + pn * x^n is represented
by the array [ p0, p1, p2, ... , pn ].
*/
class PolField {
constructor (F) {
this.F = F;
let rem = F.t;
let s = F.s;
const five = this.F.add(this.F.add(this.F.two, this.F.two), this.F.one);
this.w = new Array(s+1);
this.wi = new Array(s+1);
this.w[s] = this.F.pow(five, rem);
this.wi[s] = this.F.inv(this.w[s]);
let n=s-1;
while (n>=0) {
this.w[n] = this.F.square(this.w[n+1]);
this.wi[n] = this.F.square(this.wi[n+1]);
n--;
}
this.roots = [];
/* for (let i=0; i<16; i++) {
let r = this.F.one;
n = 1 << i;
const rootsi = new Array(n);
for (let j=0; j<n; j++) {
rootsi[j] = r;
r = this.F.mul(r, this.w[i]);
}
this.roots.push(rootsi);
}
*/
this._setRoots(15);
}
_setRoots(n) {
for (let i=n; (i>=0) && (!this.roots[i]); i--) {
let r = this.F.one;
const nroots = 1 << i;
const rootsi = new Array(nroots);
for (let j=0; j<nroots; j++) {
rootsi[j] = r;
r = this.F.mul(r, this.w[i]);
}
this.roots[i] = rootsi;
}
}
add(a, b) {
const m = Math.max(a.length, b.length);
const res = new Array(m);
for (let i=0; i<m; i++) {
res[i] = this.F.add(a[i] || this.F.zero, b[i] || this.F.zero);
}
return this.reduce(res);
}
double(a) {
return this.add(a,a);
}
sub(a, b) {
const m = Math.max(a.length, b.length);
const res = new Array(m);
for (let i=0; i<m; i++) {
res[i] = this.F.sub(a[i] || this.F.zero, b[i] || this.F.zero);
}
return this.reduce(res);
}
mulScalar(p, b) {
if (this.F.eq(b, this.F.zero)) return [];
if (this.F.eq(b, this.F.one)) return p;
const res = new Array(p.length);
for (let i=0; i<p.length; i++) {
res[i] = this.F.mul(p[i], b);
}
return res;
}
mul(a, b) {
if (a.length == 0) return [];
if (b.length == 0) return [];
if (a.length == 1) return this.mulScalar(b, a[0]);
if (b.length == 1) return this.mulScalar(a, b[0]);
if (b.length > a.length) {
[b, a] = [a, b];
}
if ((b.length <= 2) || (b.length < log2(a.length))) {
return this.mulNormal(a,b);
} else {
return this.mulFFT(a,b);
}
}
mulNormal(a, b) {
let res = [];
for (let i=0; i<b.length; i++) {
res = this.add(res, this.scaleX(this.mulScalar(a, b[i]), i) );
}
return res;
}
mulFFT(a,b) {
const longestN = Math.max(a.length, b.length);
const bitsResult = log2(longestN-1)+2;
this._setRoots(bitsResult);
const m = 1 << bitsResult;
const ea = this.extend(a,m);
const eb = this.extend(b,m);
const ta = __fft(this, ea, bitsResult, 0, 1, false);
const tb = __fft(this, eb, bitsResult, 0, 1, false);
const tres = new Array(m);
for (let i=0; i<m; i++) {
tres[i] = this.F.mul(ta[i], tb[i]);
}
const res = __fft(this, tres, bitsResult, 0, 1, true);
const twoinvm = this.F.inv( this.F.mulScalar(this.F.one, m) );
const resn = new Array(m);
for (let i=0; i<m; i++) {
resn[i] = this.F.mul(res[(m-i)%m], twoinvm);
}
return this.reduce(resn);
}
square(a) {
return this.mul(a,a);
}
scaleX(p, n) {
if (n==0) {
return p;
} else if (n>0) {
const z = new Array(n).fill(this.F.zero);
return z.concat(p);
} else {
if (-n >= p.length) return [];
return p.slice(-n);
}
}
eval2(p, x) {
let v = this.F.zero;
let ix = this.F.one;
for (let i=0; i<p.length; i++) {
v = this.F.add(v, this.F.mul(p[i], ix));
ix = this.F.mul(ix, x);
}
return v;
}
eval(p,x) {
const F = this.F;
if (p.length == 0) return F.zero;
const m = this._next2Power(p.length);
const ep = this.extend(p, m);
return _eval(ep, x, 0, 1, m);
function _eval(p, x, offset, step, n) {
if (n==1) return p[offset];
const newX = F.square(x);
const res= F.add(
_eval(p, newX, offset, step << 1, n >> 1),
F.mul(
x,
_eval(p, newX, offset+step , step << 1, n >> 1)));
return res;
}
}
lagrange(points) {
let roots = [this.F.one];
for (let i=0; i<points.length; i++) {
roots = this.mul(roots, [this.F.neg(points[i][0]), this.F.one]);
}
let sum = [];
for (let i=0; i<points.length; i++) {
let mpol = this.ruffini(roots, points[i][0]);
const factor =
this.F.mul(
this.F.inv(this.eval(mpol, points[i][0])),
points[i][1]);
mpol = this.mulScalar(mpol, factor);
sum = this.add(sum, mpol);
}
return sum;
}
fft(p) {
if (p.length <= 1) return p;
const bits = log2(p.length-1)+1;
this._setRoots(bits);
const m = 1 << bits;
const ep = this.extend(p, m);
const res = __fft(this, ep, bits, 0, 1);
return res;
}
ifft(p) {
if (p.length <= 1) return p;
const bits = log2(p.length-1)+1;
this._setRoots(bits);
const m = 1 << bits;
const ep = this.extend(p, m);
const res = __fft(this, ep, bits, 0, 1);
const twoinvm = this.F.inv( this.F.mulScalar(this.F.one, m) );
const resn = new Array(m);
for (let i=0; i<m; i++) {
resn[i] = this.F.mul(res[(m-i)%m], twoinvm);
}
return resn;
}
_fft(pall, bits, offset, step) {
const n = 1 << bits;
if (n==1) {
return [ pall[offset] ];
}
const ndiv2 = n >> 1;
const p1 = this._fft(pall, bits-1, offset, step*2);
const p2 = this._fft(pall, bits-1, offset+step, step*2);
const out = new Array(n);
let m= this.F.one;
for (let i=0; i<ndiv2; i++) {
out[i] = this.F.add(p1[i], this.F.mul(m, p2[i]));
out[i+ndiv2] = this.F.sub(p1[i], this.F.mul(m, p2[i]));
m = this.F.mul(m, this.w[bits]);
}
return out;
}
extend(p, e) {
if (e == p.length) return p;
const z = new Array(e-p.length).fill(this.F.zero);
return p.concat(z);
}
reduce(p) {
if (p.length == 0) return p;
if (! this.F.eq(p[p.length-1], this.F.zero) ) return p;
let i=p.length-1;
while( i>0 && this.F.eq(p[i], this.F.zero) ) i--;
return p.slice(0, i+1);
}
eq(a, b) {
const pa = this.reduce(a);
const pb = this.reduce(b);
if (pa.length != pb.length) return false;
for (let i=0; i<pb.length; i++) {
if (!this.F.eq(pa[i], pb[i])) return false;
}
return true;
}
ruffini(p, r) {
const res = new Array(p.length-1);
res[res.length-1] = p[p.length-1];
for (let i = res.length-2; i>=0; i--) {
res[i] = this.F.add(this.F.mul(res[i+1], r), p[i+1]);
}
return res;
}
_next2Power(v) {
v--;
v |= v >> 1;
v |= v >> 2;
v |= v >> 4;
v |= v >> 8;
v |= v >> 16;
v++;
return v;
}
toString(p) {
const ap = this.normalize(p);
let S = "";
for (let i=ap.length-1; i>=0; i--) {
if (!this.F.eq(p[i], this.F.zero)) {
if (S!="") S += " + ";
S = S + p[i].toString(10);
if (i>0) {
S = S + "x";
if (i>1) {
S = S + "^" +i;
}
}
}
}
return S;
}
normalize(p) {
const res = new Array(p.length);
for (let i=0; i<p.length; i++) {
res[i] = this.F.normalize(p[i]);
}
return res;
}
_reciprocal(p, bits) {
const k = 1 << bits;
if (k==1) {
return [ this.F.inv(p[0]) ];
}
const np = this.scaleX(p, -k/2);
const q = this._reciprocal(np, bits-1);
const a = this.scaleX(this.double(q), 3*k/2-2);
const b = this.mul( this.square(q), p);
return this.scaleX(this.sub(a,b), -(k-2));
}
// divides x^m / v
_div2(m, v) {
const kbits = log2(v.length-1)+1;
const k = 1 << kbits;
const scaleV = k - v.length;
// rec = x^(k - 2) / v* x^scaleV =>
// rec = x^(k-2-scaleV)/ v
//
// res = x^m/v = x^(m + (2*k-2 - scaleV) - (2*k-2 - scaleV)) /v =>
// res = rec * x^(m - (2*k-2 - scaleV)) =>
// res = rec * x^(m - 2*k + 2 + scaleV)
const rec = this._reciprocal(this.scaleX(v, scaleV), kbits);
const res = this.scaleX(rec, m - 2*k + 2 + scaleV);
return res;
}
div(_u, _v) {
if (_u.length < _v.length) return [];
const kbits = log2(_v.length-1)+1;
const k = 1 << kbits;
const u = this.scaleX(_u, k-_v.length);
const v = this.scaleX(_v, k-_v.length);
const n = v.length-1;
let m = u.length-1;
const s = this._reciprocal(v, kbits);
let t;
if (m>2*n) {
t = this.sub(this.scaleX([this.F.one], 2*n), this.mul(s, v));
}
let q = [];
let rem = u;
let us, ut;
let finish = false;
while (!finish) {
us = this.mul(rem, s);
q = this.add(q, this.scaleX(us, -2*n));
if ( m > 2*n ) {
ut = this.mul(rem, t);
rem = this.scaleX(ut, -2*n);
m = rem.length-1;
} else {
finish = true;
}
}
return q;
}
// returns the ith nth-root of one
oneRoot(n, i) {
let nbits = log2(n-1)+1;
let res = this.F.one;
let r = i;
if(i>=n) {
throw new Error("Given 'i' should be lower than 'n'");
}
else if (1<<nbits !== n) {
throw new Error(`Internal errlr: ${n} should equal ${1<<nbits}`);
}
while (r>0) {
if (r & 1 == 1) {
res = this.F.mul(res, this.w[nbits]);
}
r = r >> 1;
nbits --;
}
return res;
}
computeVanishingPolinomial(bits, t) {
const m = 1 << bits;
return this.F.sub(this.F.pow(t, m), this.F.one);
}
evaluateLagrangePolynomials(bits, t) {
const m= 1 << bits;
const tm = this.F.pow(t, m);
const u= new Array(m).fill(this.F.zero);
this._setRoots(bits);
const omega = this.w[bits];
if (this.F.eq(tm, this.F.one)) {
for (let i = 0; i < m; i++) {
if (this.F.eq(this.roots[bits][0],t)) { // i.e., t equals omega^i
u[i] = this.F.one;
return u;
}
}
}
const z = this.F.sub(tm, this.F.one);
// let l = this.F.mul(z, this.F.pow(this.F.twoinv, m));
let l = this.F.mul(z, this.F.inv(this.F.e(m)));
for (let i = 0; i < m; i++) {
u[i] = this.F.mul(l, this.F.inv(this.F.sub(t,this.roots[bits][i])));
l = this.F.mul(l, omega);
}
return u;
}
log2(V) {
return log2(V);
}
}
function log2( V )
{
return( ( ( V & 0xFFFF0000 ) !== 0 ? ( V &= 0xFFFF0000, 16 ) : 0 ) | ( ( V & 0xFF00FF00 ) !== 0 ? ( V &= 0xFF00FF00, 8 ) : 0 ) | ( ( V & 0xF0F0F0F0 ) !== 0 ? ( V &= 0xF0F0F0F0, 4 ) : 0 ) | ( ( V & 0xCCCCCCCC ) !== 0 ? ( V &= 0xCCCCCCCC, 2 ) : 0 ) | ( ( V & 0xAAAAAAAA ) !== 0 ) );
}
function __fft(PF, pall, bits, offset, step) {
const n = 1 << bits;
if (n==1) {
return [ pall[offset] ];
} else if (n==2) {
return [
PF.F.add(pall[offset], pall[offset + step]),
PF.F.sub(pall[offset], pall[offset + step])];
}
const ndiv2 = n >> 1;
const p1 = __fft(PF, pall, bits-1, offset, step*2);
const p2 = __fft(PF, pall, bits-1, offset+step, step*2);
const out = new Array(n);
for (let i=0; i<ndiv2; i++) {
out[i] = PF.F.add(p1[i], PF.F.mul(PF.roots[bits][i], p2[i]));
out[i+ndiv2] = PF.F.sub(p1[i], PF.F.mul(PF.roots[bits][i], p2[i]));
}
return out;
}
module.exports = PolField;
},{}],22:[function(require,module,exports){
const supportsNativeBigInt = typeof BigInt === "function";
if (supportsNativeBigInt) {
module.exports = require("./scalar_native.js");
} else {
module.exports = require("./scalar_bigint.js");
}
},{"./scalar_bigint.js":23,"./scalar_native.js":24}],23:[function(require,module,exports){
const bigInt = require("big-integer");
const assert = require("assert");
module.exports.fromString = function fromString(s, radix) {
return bigInt(s,radix);
};
module.exports.fromArray = function fromArray(a, radix) {
return bigInt.fromArray(a, radix);
};
module.exports.bitLength = function (a) {
return bigInt(a).bitLength();
};
module.exports.isNegative = function (a) {
return bigInt(a).isNegative();
};
module.exports.isZero = function (a) {
return bigInt(a).isZero();
};
module.exports.shiftLeft = function (a, n) {
return bigInt(a).shiftLeft(n);
};
module.exports.shiftRight = function (a, n) {
return bigInt(a).shiftRight(n);
};
module.exports.shl = module.exports.shiftLeft;
module.exports.shr = module.exports.shiftRight;
module.exports.isOdd = function (a) {
return bigInt(a).isOdd();
};
module.exports.naf = function naf(n) {
let E = bigInt(n);
const res = [];
while (E.gt(bigInt.zero)) {
if (E.isOdd()) {
const z = 2 - E.mod(4).toJSNumber();
res.push( z );
E = E.minus(z);
} else {
res.push( 0 );
}
E = E.shiftRight(1);
}
return res;
};
module.exports.bits = function naf(n) {
let E = bigInt(n);
const res = [];
while (E.gt(bigInt.zero)) {
if (E.isOdd()) {
res.push(1);
} else {
res.push( 0 );
}
E = E.shiftRight(1);
}
return res;
};
module.exports.toNumber = function(s) {
assert(s.lt(bigInt("100000000", 16)));
return s.toJSNumber();
};
module.exports.toArray = function(s, radix) {
return bigInt(s).toArray(radix);
};
module.exports.e = function(a) {
return bigInt(a);
};
module.exports.add = function(a, b) {
return bigInt(a).add(bigInt(b));
};
module.exports.sub = function(a, b) {
return bigInt(a).minus(bigInt(b));
};
module.exports.neg = function(a) {
return bigInt.zero.minus(bigInt(a));
};
module.exports.mul = function(a, b) {
return bigInt(a).times(bigInt(b));
};
module.exports.square = function(a) {
return bigInt(a).square();
};
module.exports.div = function(a, b) {
return bigInt(a).divide(bigInt(b));
};
module.exports.mod = function(a, b) {
return bigInt(a).mod(bigInt(b));
};
module.exports.eq = function(a, b) {
return bigInt(a).eq(bigInt(b));
};
module.exports.neq = function(a, b) {
return bigInt(a).neq(bigInt(b));
};
module.exports.lt = function(a, b) {
return bigInt(a).lt(bigInt(b));
};
module.exports.gt = function(a, b) {
return bigInt(a).gt(bigInt(b));
};
module.exports.leq = function(a, b) {
return bigInt(a).leq(bigInt(b));
};
module.exports.geq = function(a, b) {
return bigInt(a).geq(bigInt(b));
};
module.exports.band = function(a, b) {
return bigInt(a).and(bigInt(b));
};
module.exports.bor = function(a, b) {
return bigInt(a).or(bigInt(b));
};
module.exports.bxor = function(a, b) {
return bigInt(a).xor(bigInt(b));
};
module.exports.band = function(a, b) {
return (!bigInt(a).isZero()) && (!bigInt(b).isZero());
};
module.exports.bor = function(a, b) {
return (!bigInt(a).isZero()) || (!bigInt(b).isZero());
};
module.exports.bnot = function(a) {
return bigInt(a).isZero();
};
},{"assert":1,"big-integer":6}],24:[function(require,module,exports){
/* global BigInt */
const assert = require("assert");
const hexLen = [ 0, 1, 2, 2, 3, 3, 3, 3, 4 ,4 ,4 ,4 ,4 ,4 ,4 ,4];
module.exports.fromString = function fromString(s, radix) {
if ((!radix)||(radix==10)) {
return BigInt(s);
} else if (radix==16) {
return BigInt("0x"+s);
}
};
module.exports.fromArray = function fromArray(a, radix) {
let acc =0n;
radix = BigInt(radix);
for (let i=0; i<a.length; i++) {
acc = acc*radix + BigInt(a[i]);
}
return acc;
};
module.exports.bitLength = function (a) {
const aS =a.toString(16);
return (aS.length-1)*4 +hexLen[aS[0]];
};
module.exports.isNegative = function (a) {
return BigInt(a) < 0n;
};
module.exports.isZero = function (a) {
return !a;
};
module.exports.shiftLeft = function (a, n) {
return BigInt(a) << BigInt(n);
};
module.exports.shiftRight = function (a, n) {
return BigInt(a) >> BigInt(n);
};
module.exports.shl = module.exports.shiftLeft;
module.exports.shr = module.exports.shiftRight;
module.exports.isOdd = function (a) {
return (BigInt(a) & 1n) == 1n;
};
module.exports.naf = function naf(n) {
let E = BigInt(n);
const res = [];
while (E) {
if (E & 1n) {
const z = 2 - Number(E % 4n);
res.push( z );
E = E - BigInt(z);
} else {
res.push( 0 );
}
E = E >> 1n;
}
return res;
};
module.exports.bits = function naf(n) {
let E = BigInt(n);
const res = [];
while (E) {
if (E & 1n) {
res.push(1);
} else {
res.push( 0 );
}
E = E >> 1n;
}
return res;
};
module.exports.toNumber = function(s) {
assert(s<0x100000000n);
return Number(s);
};
module.exports.toArray = function(s, radix) {
const res = [];
let rem = BigInt(s);
radix = BigInt(radix);
while (rem) {
res.unshift( Number(rem % radix));
rem = rem / radix;
}
return res;
};
module.exports.e = function(a) {
return BigInt(a);
};
module.exports.add = function(a, b) {
return BigInt(a) + BigInt(b);
};
module.exports.sub = function(a, b) {
return BigInt(a) - BigInt(b);
};
module.exports.neg = function(a) {
return -BigInt(a);
};
module.exports.mul = function(a, b) {
return BigInt(a) * BigInt(b);
};
module.exports.square = function(a) {
return BigInt(a) * BigInt(a);
};
module.exports.div = function(a, b) {
return BigInt(a) / BigInt(b);
};
module.exports.mod = function(a, b) {
return BigInt(a) % BigInt(b);
};
module.exports.eq = function(a, b) {
return BigInt(a) == BigInt(b);
};
module.exports.neq = function(a, b) {
return BigInt(a) != BigInt(b);
};
module.exports.lt = function(a, b) {
return BigInt(a) < BigInt(b);
};
module.exports.gt = function(a, b) {
return BigInt(a) > BigInt(b);
};
module.exports.leq = function(a, b) {
return BigInt(a) <= BigInt(b);
};
module.exports.geq = function(a, b) {
return BigInt(a) >= BigInt(b);
};
module.exports.band = function(a, b) {
return BigInt(a) & BigInt(b);
};
module.exports.bor = function(a, b) {
return BigInt(a) | BigInt(b);
};
module.exports.bxor = function(a, b) {
return BigInt(a) ^ BigInt(b);
};
module.exports.band = function(a, b) {
return BigInt(a) && BigInt(b);
};
module.exports.bor = function(a, b) {
return BigInt(a) || BigInt(b);
};
module.exports.bnot = function(a) {
return !BigInt(a);
};
},{"assert":1}],25:[function(require,module,exports){
const supportsNativeBigInt = typeof BigInt === "function";
if (supportsNativeBigInt) {
module.exports = require("./utils_native.js");
} else {
module.exports = require("./utils_bigint.js");
}
},{"./utils_bigint.js":26,"./utils_native.js":27}],26:[function(require,module,exports){
(function (Buffer){
const assert = require("assert");
const bigInt = require("big-integer");
module.exports.stringifyBigInts = function stringifyBigInts(o) {
if ((typeof(o) == "bigint") || o.eq !== undefined) {
return o.toString(10);
} else if (Array.isArray(o)) {
return o.map(stringifyBigInts);
} else if (typeof o == "object") {
const res = {};
for (let k in o) {
res[k] = stringifyBigInts(o[k]);
}
return res;
} else {
return o;
}
};
module.exports.unstringifyBigInts = function unstringifyBigInts(o) {
if ((typeof(o) == "string") && (/^[0-9]+$/.test(o) )) {
return bigInt(o);
} else if (Array.isArray(o)) {
return o.map(unstringifyBigInts);
} else if (typeof o == "object") {
const res = {};
for (let k in o) {
res[k] = unstringifyBigInts(o[k]);
}
return res;
} else {
return o;
}
};
module.exports.beBuff2int = function beBuff2int(buff) {
let res = bigInt.zero;
for (let i=0; i<buff.length; i++) {
const n = bigInt(buff[buff.length - i - 1]);
res = res.add(n.shiftLeft(i*8));
}
return res;
};
module.exports.beInt2Buff = function beInt2Buff(n, len) {
let r = n;
let o =len-1;
const buff = Buffer.alloc(len);
while ((r.gt(bigInt.zero))&&(o>=0)) {
let c = Number(r.and(bigInt("255")));
buff[o] = c;
o--;
r = r.shiftRight(8);
}
assert(r.eq(bigInt.zero));
return buff;
};
module.exports.leBuff2int = function leBuff2int (buff) {
let res = bigInt.zero;
for (let i=0; i<buff.length; i++) {
const n = bigInt(buff[i]);
res = res.add(n.shiftLeft(i*8));
}
return res;
};
module.exports.leInt2Buff = function leInt2Buff(n, len) {
let r = n;
let o =0;
const buff = Buffer.alloc(len);
while ((r.gt(bigInt.zero))&&(o<buff.length)) {
let c = Number(r.and(bigInt(255)));
buff[o] = c;
o++;
r = r.shiftRight(8);
}
assert(r.eq(bigInt.zero));
return buff;
};
}).call(this,require("buffer").Buffer)
},{"assert":1,"big-integer":6,"buffer":8}],27:[function(require,module,exports){
(function (Buffer){
/* global BigInt */
const assert = require("assert");
module.exports.stringifyBigInts = function stringifyBigInts(o) {
if ((typeof(o) == "bigint") || o.eq !== undefined) {
return o.toString(10);
} else if (Array.isArray(o)) {
return o.map(stringifyBigInts);
} else if (typeof o == "object") {
const res = {};
for (let k in o) {
res[k] = stringifyBigInts(o[k]);
}
return res;
} else {
return o;
}
};
module.exports.unstringifyBigInts = function unstringifyBigInts(o) {
if ((typeof(o) == "string") && (/^[0-9]+$/.test(o) )) {
return BigInt(o);
} else if (Array.isArray(o)) {
return o.map(unstringifyBigInts);
} else if (typeof o == "object") {
const res = {};
for (let k in o) {
res[k] = unstringifyBigInts(o[k]);
}
return res;
} else {
return o;
}
};
module.exports.beBuff2int = function beBuff2int(buff) {
let res = 0n;
let i = buff.length;
while (i>0) {
if (i >= 4) {
i -= 4;
res += BigInt(buff.readUInt32BE(i)) << BigInt( i*8);
} else if (i >= 2) {
i -= 2;
res += BigInt(buff.readUInt16BE(i)) << BigInt( i*8);
} else {
i -= 1;
res += BigInt(buff.readUInt8(i)) << BigInt( i*8);
}
}
return res;
};
module.exports.beInt2Buff = function beInt2Buff(n, len) {
let r = n;
const buff = Buffer.alloc(len);
let o = len;
while (o > 0) {
if (o-4 >= 0) {
o -= 4;
buff.writeUInt32BE(Number(r & 0xFFFFFFFFn), o);
r = r >> 32n;
} else if (o-2 >= 0) {
o -= 2;
buff.writeUInt16BE(Number(r & 0xFFFFn), o);
r = r >> 16n;
} else {
o -= 1;
buff.writeUInt8(Number(r & 0xFFn),o );
r = r >> 8n;
}
}
assert(r == 0n);
return buff;
};
module.exports.leBuff2int = function leBuff2int(buff) {
let res = 0n;
let i = 0;
while (i<buff.length) {
if (i + 4 <= buff.length) {
res += BigInt(buff.readUInt32LE(i)) << BigInt( i*8);
i += 4;
} else if (i + 4 <= buff.length) {
res += BigInt(buff.readUInt16LE(i)) << BigInt( i*8);
i += 2;
} else {
res += BigInt(buff.readUInt8(i)) << BigInt( i*8);
i += 1;
}
}
return res;
};
module.exports.leInt2Buff = function leInt2Buff(n, len) {
let r = n;
const buff = Buffer.alloc(len);
let o = 0;
while (o < len) {
if (o+4 <= len) {
buff.writeUInt32LE(Number(r & 0xFFFFFFFFn), o );
o += 4;
r = r >> 32n;
} else if (o+2 <= len) {
buff.writeUInt16LE(Number(r & 0xFFFFn), o );
o += 2;
r = r >> 16n;
} else {
buff.writeUInt8(Number(r & 0xFFn), o );
o += 1;
r = r >> 8n;
}
}
assert(r == 0n);
return buff;
};
}).call(this,require("buffer").Buffer)
},{"assert":1,"buffer":8}],28:[function(require,module,exports){
exports.read = function (buffer, offset, isLE, mLen, nBytes) {
var e, m
var eLen = (nBytes * 8) - mLen - 1
var eMax = (1 << eLen) - 1
var eBias = eMax >> 1
var nBits = -7
var i = isLE ? (nBytes - 1) : 0
var d = isLE ? -1 : 1
var s = buffer[offset + i]
i += d
e = s & ((1 << (-nBits)) - 1)
s >>= (-nBits)
nBits += eLen
for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}
m = e & ((1 << (-nBits)) - 1)
e >>= (-nBits)
nBits += mLen
for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}
if (e === 0) {
e = 1 - eBias
} else if (e === eMax) {
return m ? NaN : ((s ? -1 : 1) * Infinity)
} else {
m = m + Math.pow(2, mLen)
e = e - eBias
}
return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
}
exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
var e, m, c
var eLen = (nBytes * 8) - mLen - 1
var eMax = (1 << eLen) - 1
var eBias = eMax >> 1
var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
var i = isLE ? 0 : (nBytes - 1)
var d = isLE ? 1 : -1
var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
value = Math.abs(value)
if (isNaN(value) || value === Infinity) {
m = isNaN(value) ? 1 : 0
e = eMax
} else {
e = Math.floor(Math.log(value) / Math.LN2)
if (value * (c = Math.pow(2, -e)) < 1) {
e--
c *= 2
}
if (e + eBias >= 1) {
value += rt / c
} else {
value += rt * Math.pow(2, 1 - eBias)
}
if (value * c >= 2) {
e++
c /= 2
}
if (e + eBias >= eMax) {
m = 0
e = eMax
} else if (e + eBias >= 1) {
m = ((value * c) - 1) * Math.pow(2, mLen)
e = e + eBias
} else {
m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
e = 0
}
}
for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
e = (e << mLen) | m
eLen += mLen
for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
buffer[offset + i - d] |= s * 128
}
},{}],29:[function(require,module,exports){
if (typeof Object.create === 'function') {
// implementation from standard node.js 'util' module
module.exports = function inherits(ctor, superCtor) {
if (superCtor) {
ctor.super_ = superCtor
ctor.prototype = Object.create(superCtor.prototype, {
constructor: {
value: ctor,
enumerable: false,
writable: true,
configurable: true
}
})
}
};
} else {
// old school shim for old browsers
module.exports = function inherits(ctor, superCtor) {
if (superCtor) {
ctor.super_ = superCtor
var TempCtor = function () {}
TempCtor.prototype = superCtor.prototype
ctor.prototype = new TempCtor()
ctor.prototype.constructor = ctor
}
}
}
},{}],30:[function(require,module,exports){
/*!
* Determine if an object is a Buffer
*
* @author Feross Aboukhadijeh <https://feross.org>
* @license MIT
*/
// The _isBuffer check is for Safari 5-7 support, because it's missing
// Object.prototype.constructor. Remove this eventually
module.exports = function (obj) {
return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer)
}
function isBuffer (obj) {
return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj)
}
// For Node v0.10 support. Remove this eventually.
function isSlowBuffer (obj) {
return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0))
}
},{}],31:[function(require,module,exports){
var toString = {}.toString;
module.exports = Array.isArray || function (arr) {
return toString.call(arr) == '[object Array]';
};
},{}],32:[function(require,module,exports){
module.exports = require('./lib/api')(require('./lib/keccak'))
},{"./lib/api":33,"./lib/keccak":37}],33:[function(require,module,exports){
const createKeccak = require('./keccak')
const createShake = require('./shake')
module.exports = function (KeccakState) {
const Keccak = createKeccak(KeccakState)
const Shake = createShake(KeccakState)
return function (algorithm, options) {
const hash = typeof algorithm === 'string' ? algorithm.toLowerCase() : algorithm
switch (hash) {
case 'keccak224': return new Keccak(1152, 448, null, 224, options)
case 'keccak256': return new Keccak(1088, 512, null, 256, options)
case 'keccak384': return new Keccak(832, 768, null, 384, options)
case 'keccak512': return new Keccak(576, 1024, null, 512, options)
case 'sha3-224': return new Keccak(1152, 448, 0x06, 224, options)
case 'sha3-256': return new Keccak(1088, 512, 0x06, 256, options)
case 'sha3-384': return new Keccak(832, 768, 0x06, 384, options)
case 'sha3-512': return new Keccak(576, 1024, 0x06, 512, options)
case 'shake128': return new Shake(1344, 256, 0x1f, options)
case 'shake256': return new Shake(1088, 512, 0x1f, options)
default: throw new Error('Invald algorithm: ' + algorithm)
}
}
}
},{"./keccak":34,"./shake":35}],34:[function(require,module,exports){
(function (Buffer){
const { Transform } = require('stream')
module.exports = (KeccakState) => class Keccak extends Transform {
constructor (rate, capacity, delimitedSuffix, hashBitLength, options) {
super(options)
this._rate = rate
this._capacity = capacity
this._delimitedSuffix = delimitedSuffix
this._hashBitLength = hashBitLength
this._options = options
this._state = new KeccakState()
this._state.initialize(rate, capacity)
this._finalized = false
}
_transform (chunk, encoding, callback) {
let error = null
try {
this.update(chunk, encoding)
} catch (err) {
error = err
}
callback(error)
}
_flush (callback) {
let error = null
try {
this.push(this.digest())
} catch (err) {
error = err
}
callback(error)
}
update (data, encoding) {
if (!Buffer.isBuffer(data) && typeof data !== 'string') throw new TypeError('Data must be a string or a buffer')
if (this._finalized) throw new Error('Digest already called')
if (!Buffer.isBuffer(data)) data = Buffer.from(data, encoding)
this._state.absorb(data)
return this
}
digest (encoding) {
if (this._finalized) throw new Error('Digest already called')
this._finalized = true
if (this._delimitedSuffix) this._state.absorbLastFewBits(this._delimitedSuffix)
let digest = this._state.squeeze(this._hashBitLength / 8)
if (encoding !== undefined) digest = digest.toString(encoding)
this._resetState()
return digest
}
// remove result from memory
_resetState () {
this._state.initialize(this._rate, this._capacity)
return this
}
// because sometimes we need hash right now and little later
_clone () {
const clone = new Keccak(this._rate, this._capacity, this._delimitedSuffix, this._hashBitLength, this._options)
this._state.copy(clone._state)
clone._finalized = this._finalized
return clone
}
}
}).call(this,require("buffer").Buffer)
},{"buffer":8,"stream":51}],35:[function(require,module,exports){
(function (Buffer){
const { Transform } = require('stream')
module.exports = (KeccakState) => class Shake extends Transform {
constructor (rate, capacity, delimitedSuffix, options) {
super(options)
this._rate = rate
this._capacity = capacity
this._delimitedSuffix = delimitedSuffix
this._options = options
this._state = new KeccakState()
this._state.initialize(rate, capacity)
this._finalized = false
}
_transform (chunk, encoding, callback) {
let error = null
try {
this.update(chunk, encoding)
} catch (err) {
error = err
}
callback(error)
}
_flush () {}
_read (size) {
this.push(this.squeeze(size))
}
update (data, encoding) {
if (!Buffer.isBuffer(data) && typeof data !== 'string') throw new TypeError('Data must be a string or a buffer')
if (this._finalized) throw new Error('Squeeze already called')
if (!Buffer.isBuffer(data)) data = Buffer.from(data, encoding)
this._state.absorb(data)
return this
}
squeeze (dataByteLength, encoding) {
if (!this._finalized) {
this._finalized = true
this._state.absorbLastFewBits(this._delimitedSuffix)
}
let data = this._state.squeeze(dataByteLength)
if (encoding !== undefined) data = data.toString(encoding)
return data
}
_resetState () {
this._state.initialize(this._rate, this._capacity)
return this
}
_clone () {
const clone = new Shake(this._rate, this._capacity, this._delimitedSuffix, this._options)
this._state.copy(clone._state)
clone._finalized = this._finalized
return clone
}
}
}).call(this,require("buffer").Buffer)
},{"buffer":8,"stream":51}],36:[function(require,module,exports){
const P1600_ROUND_CONSTANTS = [1, 0, 32898, 0, 32906, 2147483648, 2147516416, 2147483648, 32907, 0, 2147483649, 0, 2147516545, 2147483648, 32777, 2147483648, 138, 0, 136, 0, 2147516425, 0, 2147483658, 0, 2147516555, 0, 139, 2147483648, 32905, 2147483648, 32771, 2147483648, 32770, 2147483648, 128, 2147483648, 32778, 0, 2147483658, 2147483648, 2147516545, 2147483648, 32896, 2147483648, 2147483649, 0, 2147516424, 2147483648]
exports.p1600 = function (s) {
for (let round = 0; round < 24; ++round) {
// theta
const lo0 = s[0] ^ s[10] ^ s[20] ^ s[30] ^ s[40]
const hi0 = s[1] ^ s[11] ^ s[21] ^ s[31] ^ s[41]
const lo1 = s[2] ^ s[12] ^ s[22] ^ s[32] ^ s[42]
const hi1 = s[3] ^ s[13] ^ s[23] ^ s[33] ^ s[43]
const lo2 = s[4] ^ s[14] ^ s[24] ^ s[34] ^ s[44]
const hi2 = s[5] ^ s[15] ^ s[25] ^ s[35] ^ s[45]
const lo3 = s[6] ^ s[16] ^ s[26] ^ s[36] ^ s[46]
const hi3 = s[7] ^ s[17] ^ s[27] ^ s[37] ^ s[47]
const lo4 = s[8] ^ s[18] ^ s[28] ^ s[38] ^ s[48]
const hi4 = s[9] ^ s[19] ^ s[29] ^ s[39] ^ s[49]
let lo = lo4 ^ (lo1 << 1 | hi1 >>> 31)
let hi = hi4 ^ (hi1 << 1 | lo1 >>> 31)
const t1slo0 = s[0] ^ lo
const t1shi0 = s[1] ^ hi
const t1slo5 = s[10] ^ lo
const t1shi5 = s[11] ^ hi
const t1slo10 = s[20] ^ lo
const t1shi10 = s[21] ^ hi
const t1slo15 = s[30] ^ lo
const t1shi15 = s[31] ^ hi
const t1slo20 = s[40] ^ lo
const t1shi20 = s[41] ^ hi
lo = lo0 ^ (lo2 << 1 | hi2 >>> 31)
hi = hi0 ^ (hi2 << 1 | lo2 >>> 31)
const t1slo1 = s[2] ^ lo
const t1shi1 = s[3] ^ hi
const t1slo6 = s[12] ^ lo
const t1shi6 = s[13] ^ hi
const t1slo11 = s[22] ^ lo
const t1shi11 = s[23] ^ hi
const t1slo16 = s[32] ^ lo
const t1shi16 = s[33] ^ hi
const t1slo21 = s[42] ^ lo
const t1shi21 = s[43] ^ hi
lo = lo1 ^ (lo3 << 1 | hi3 >>> 31)
hi = hi1 ^ (hi3 << 1 | lo3 >>> 31)
const t1slo2 = s[4] ^ lo
const t1shi2 = s[5] ^ hi
const t1slo7 = s[14] ^ lo
const t1shi7 = s[15] ^ hi
const t1slo12 = s[24] ^ lo
const t1shi12 = s[25] ^ hi
const t1slo17 = s[34] ^ lo
const t1shi17 = s[35] ^ hi
const t1slo22 = s[44] ^ lo
const t1shi22 = s[45] ^ hi
lo = lo2 ^ (lo4 << 1 | hi4 >>> 31)
hi = hi2 ^ (hi4 << 1 | lo4 >>> 31)
const t1slo3 = s[6] ^ lo
const t1shi3 = s[7] ^ hi
const t1slo8 = s[16] ^ lo
const t1shi8 = s[17] ^ hi
const t1slo13 = s[26] ^ lo
const t1shi13 = s[27] ^ hi
const t1slo18 = s[36] ^ lo
const t1shi18 = s[37] ^ hi
const t1slo23 = s[46] ^ lo
const t1shi23 = s[47] ^ hi
lo = lo3 ^ (lo0 << 1 | hi0 >>> 31)
hi = hi3 ^ (hi0 << 1 | lo0 >>> 31)
const t1slo4 = s[8] ^ lo
const t1shi4 = s[9] ^ hi
const t1slo9 = s[18] ^ lo
const t1shi9 = s[19] ^ hi
const t1slo14 = s[28] ^ lo
const t1shi14 = s[29] ^ hi
const t1slo19 = s[38] ^ lo
const t1shi19 = s[39] ^ hi
const t1slo24 = s[48] ^ lo
const t1shi24 = s[49] ^ hi
// rho & pi
const t2slo0 = t1slo0
const t2shi0 = t1shi0
const t2slo16 = (t1shi5 << 4 | t1slo5 >>> 28)
const t2shi16 = (t1slo5 << 4 | t1shi5 >>> 28)
const t2slo7 = (t1slo10 << 3 | t1shi10 >>> 29)
const t2shi7 = (t1shi10 << 3 | t1slo10 >>> 29)
const t2slo23 = (t1shi15 << 9 | t1slo15 >>> 23)
const t2shi23 = (t1slo15 << 9 | t1shi15 >>> 23)
const t2slo14 = (t1slo20 << 18 | t1shi20 >>> 14)
const t2shi14 = (t1shi20 << 18 | t1slo20 >>> 14)
const t2slo10 = (t1slo1 << 1 | t1shi1 >>> 31)
const t2shi10 = (t1shi1 << 1 | t1slo1 >>> 31)
const t2slo1 = (t1shi6 << 12 | t1slo6 >>> 20)
const t2shi1 = (t1slo6 << 12 | t1shi6 >>> 20)
const t2slo17 = (t1slo11 << 10 | t1shi11 >>> 22)
const t2shi17 = (t1shi11 << 10 | t1slo11 >>> 22)
const t2slo8 = (t1shi16 << 13 | t1slo16 >>> 19)
const t2shi8 = (t1slo16 << 13 | t1shi16 >>> 19)
const t2slo24 = (t1slo21 << 2 | t1shi21 >>> 30)
const t2shi24 = (t1shi21 << 2 | t1slo21 >>> 30)
const t2slo20 = (t1shi2 << 30 | t1slo2 >>> 2)
const t2shi20 = (t1slo2 << 30 | t1shi2 >>> 2)
const t2slo11 = (t1slo7 << 6 | t1shi7 >>> 26)
const t2shi11 = (t1shi7 << 6 | t1slo7 >>> 26)
const t2slo2 = (t1shi12 << 11 | t1slo12 >>> 21)
const t2shi2 = (t1slo12 << 11 | t1shi12 >>> 21)
const t2slo18 = (t1slo17 << 15 | t1shi17 >>> 17)
const t2shi18 = (t1shi17 << 15 | t1slo17 >>> 17)
const t2slo9 = (t1shi22 << 29 | t1slo22 >>> 3)
const t2shi9 = (t1slo22 << 29 | t1shi22 >>> 3)
const t2slo5 = (t1slo3 << 28 | t1shi3 >>> 4)
const t2shi5 = (t1shi3 << 28 | t1slo3 >>> 4)
const t2slo21 = (t1shi8 << 23 | t1slo8 >>> 9)
const t2shi21 = (t1slo8 << 23 | t1shi8 >>> 9)
const t2slo12 = (t1slo13 << 25 | t1shi13 >>> 7)
const t2shi12 = (t1shi13 << 25 | t1slo13 >>> 7)
const t2slo3 = (t1slo18 << 21 | t1shi18 >>> 11)
const t2shi3 = (t1shi18 << 21 | t1slo18 >>> 11)
const t2slo19 = (t1shi23 << 24 | t1slo23 >>> 8)
const t2shi19 = (t1slo23 << 24 | t1shi23 >>> 8)
const t2slo15 = (t1slo4 << 27 | t1shi4 >>> 5)
const t2shi15 = (t1shi4 << 27 | t1slo4 >>> 5)
const t2slo6 = (t1slo9 << 20 | t1shi9 >>> 12)
const t2shi6 = (t1shi9 << 20 | t1slo9 >>> 12)
const t2slo22 = (t1shi14 << 7 | t1slo14 >>> 25)
const t2shi22 = (t1slo14 << 7 | t1shi14 >>> 25)
const t2slo13 = (t1slo19 << 8 | t1shi19 >>> 24)
const t2shi13 = (t1shi19 << 8 | t1slo19 >>> 24)
const t2slo4 = (t1slo24 << 14 | t1shi24 >>> 18)
const t2shi4 = (t1shi24 << 14 | t1slo24 >>> 18)
// chi
s[0] = t2slo0 ^ (~t2slo1 & t2slo2)
s[1] = t2shi0 ^ (~t2shi1 & t2shi2)
s[10] = t2slo5 ^ (~t2slo6 & t2slo7)
s[11] = t2shi5 ^ (~t2shi6 & t2shi7)
s[20] = t2slo10 ^ (~t2slo11 & t2slo12)
s[21] = t2shi10 ^ (~t2shi11 & t2shi12)
s[30] = t2slo15 ^ (~t2slo16 & t2slo17)
s[31] = t2shi15 ^ (~t2shi16 & t2shi17)
s[40] = t2slo20 ^ (~t2slo21 & t2slo22)
s[41] = t2shi20 ^ (~t2shi21 & t2shi22)
s[2] = t2slo1 ^ (~t2slo2 & t2slo3)
s[3] = t2shi1 ^ (~t2shi2 & t2shi3)
s[12] = t2slo6 ^ (~t2slo7 & t2slo8)
s[13] = t2shi6 ^ (~t2shi7 & t2shi8)
s[22] = t2slo11 ^ (~t2slo12 & t2slo13)
s[23] = t2shi11 ^ (~t2shi12 & t2shi13)
s[32] = t2slo16 ^ (~t2slo17 & t2slo18)
s[33] = t2shi16 ^ (~t2shi17 & t2shi18)
s[42] = t2slo21 ^ (~t2slo22 & t2slo23)
s[43] = t2shi21 ^ (~t2shi22 & t2shi23)
s[4] = t2slo2 ^ (~t2slo3 & t2slo4)
s[5] = t2shi2 ^ (~t2shi3 & t2shi4)
s[14] = t2slo7 ^ (~t2slo8 & t2slo9)
s[15] = t2shi7 ^ (~t2shi8 & t2shi9)
s[24] = t2slo12 ^ (~t2slo13 & t2slo14)
s[25] = t2shi12 ^ (~t2shi13 & t2shi14)
s[34] = t2slo17 ^ (~t2slo18 & t2slo19)
s[35] = t2shi17 ^ (~t2shi18 & t2shi19)
s[44] = t2slo22 ^ (~t2slo23 & t2slo24)
s[45] = t2shi22 ^ (~t2shi23 & t2shi24)
s[6] = t2slo3 ^ (~t2slo4 & t2slo0)
s[7] = t2shi3 ^ (~t2shi4 & t2shi0)
s[16] = t2slo8 ^ (~t2slo9 & t2slo5)
s[17] = t2shi8 ^ (~t2shi9 & t2shi5)
s[26] = t2slo13 ^ (~t2slo14 & t2slo10)
s[27] = t2shi13 ^ (~t2shi14 & t2shi10)
s[36] = t2slo18 ^ (~t2slo19 & t2slo15)
s[37] = t2shi18 ^ (~t2shi19 & t2shi15)
s[46] = t2slo23 ^ (~t2slo24 & t2slo20)
s[47] = t2shi23 ^ (~t2shi24 & t2shi20)
s[8] = t2slo4 ^ (~t2slo0 & t2slo1)
s[9] = t2shi4 ^ (~t2shi0 & t2shi1)
s[18] = t2slo9 ^ (~t2slo5 & t2slo6)
s[19] = t2shi9 ^ (~t2shi5 & t2shi6)
s[28] = t2slo14 ^ (~t2slo10 & t2slo11)
s[29] = t2shi14 ^ (~t2shi10 & t2shi11)
s[38] = t2slo19 ^ (~t2slo15 & t2slo16)
s[39] = t2shi19 ^ (~t2shi15 & t2shi16)
s[48] = t2slo24 ^ (~t2slo20 & t2slo21)
s[49] = t2shi24 ^ (~t2shi20 & t2shi21)
// iota
s[0] ^= P1600_ROUND_CONSTANTS[round * 2]
s[1] ^= P1600_ROUND_CONSTANTS[round * 2 + 1]
}
}
},{}],37:[function(require,module,exports){
(function (Buffer){
const keccakState = require('./keccak-state-unroll')
function Keccak () {
// much faster than `new Array(50)`
this.state = [
0, 0, 0, 0, 0,
0, 0, 0, 0, 0,
0, 0, 0, 0, 0,
0, 0, 0, 0, 0,
0, 0, 0, 0, 0
]
this.blockSize = null
this.count = 0
this.squeezing = false
}
Keccak.prototype.initialize = function (rate, capacity) {
for (let i = 0; i < 50; ++i) this.state[i] = 0
this.blockSize = rate / 8
this.count = 0
this.squeezing = false
}
Keccak.prototype.absorb = function (data) {
for (let i = 0; i < data.length; ++i) {
this.state[~~(this.count / 4)] ^= data[i] << (8 * (this.count % 4))
this.count += 1
if (this.count === this.blockSize) {
keccakState.p1600(this.state)
this.count = 0
}
}
}
Keccak.prototype.absorbLastFewBits = function (bits) {
this.state[~~(this.count / 4)] ^= bits << (8 * (this.count % 4))
if ((bits & 0x80) !== 0 && this.count === (this.blockSize - 1)) keccakState.p1600(this.state)
this.state[~~((this.blockSize - 1) / 4)] ^= 0x80 << (8 * ((this.blockSize - 1) % 4))
keccakState.p1600(this.state)
this.count = 0
this.squeezing = true
}
Keccak.prototype.squeeze = function (length) {
if (!this.squeezing) this.absorbLastFewBits(0x01)
const output = Buffer.alloc(length)
for (let i = 0; i < length; ++i) {
output[i] = (this.state[~~(this.count / 4)] >>> (8 * (this.count % 4))) & 0xff
this.count += 1
if (this.count === this.blockSize) {
keccakState.p1600(this.state)
this.count = 0
}
}
return output
}
Keccak.prototype.copy = function (dest) {
for (let i = 0; i < 50; ++i) dest.state[i] = this.state[i]
dest.blockSize = this.blockSize
dest.count = this.count
dest.squeezing = this.squeezing
}
module.exports = Keccak
}).call(this,require("buffer").Buffer)
},{"./keccak-state-unroll":36,"buffer":8}],38:[function(require,module,exports){
/*
object-assign
(c) Sindre Sorhus
@license MIT
*/
'use strict';
/* eslint-disable no-unused-vars */
var getOwnPropertySymbols = Object.getOwnPropertySymbols;
var hasOwnProperty = Object.prototype.hasOwnProperty;
var propIsEnumerable = Object.prototype.propertyIsEnumerable;
function toObject(val) {
if (val === null || val === undefined) {
throw new TypeError('Object.assign cannot be called with null or undefined');
}
return Object(val);
}
function shouldUseNative() {
try {
if (!Object.assign) {
return false;
}
// Detect buggy property enumeration order in older V8 versions.
// https://bugs.chromium.org/p/v8/issues/detail?id=4118
var test1 = new String('abc'); // eslint-disable-line no-new-wrappers
test1[5] = 'de';
if (Object.getOwnPropertyNames(test1)[0] === '5') {
return false;
}
// https://bugs.chromium.org/p/v8/issues/detail?id=3056
var test2 = {};
for (var i = 0; i < 10; i++) {
test2['_' + String.fromCharCode(i)] = i;
}
var order2 = Object.getOwnPropertyNames(test2).map(function (n) {
return test2[n];
});
if (order2.join('') !== '0123456789') {
return false;
}
// https://bugs.chromium.org/p/v8/issues/detail?id=3056
var test3 = {};
'abcdefghijklmnopqrst'.split('').forEach(function (letter) {
test3[letter] = letter;
});
if (Object.keys(Object.assign({}, test3)).join('') !==
'abcdefghijklmnopqrst') {
return false;
}
return true;
} catch (err) {
// We don't expect any of the above to throw, but better to be safe.
return false;
}
}
module.exports = shouldUseNative() ? Object.assign : function (target, source) {
var from;
var to = toObject(target);
var symbols;
for (var s = 1; s < arguments.length; s++) {
from = Object(arguments[s]);
for (var key in from) {
if (hasOwnProperty.call(from, key)) {
to[key] = from[key];
}
}
if (getOwnPropertySymbols) {
symbols = getOwnPropertySymbols(from);
for (var i = 0; i < symbols.length; i++) {
if (propIsEnumerable.call(from, symbols[i])) {
to[symbols[i]] = from[symbols[i]];
}
}
}
}
return to;
};
},{}],39:[function(require,module,exports){
(function (process){
'use strict';
if (typeof process === 'undefined' ||
!process.version ||
process.version.indexOf('v0.') === 0 ||
process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) {
module.exports = { nextTick: nextTick };
} else {
module.exports = process
}
function nextTick(fn, arg1, arg2, arg3) {
if (typeof fn !== 'function') {
throw new TypeError('"callback" argument must be a function');
}
var len = arguments.length;
var args, i;
switch (len) {
case 0:
case 1:
return process.nextTick(fn);
case 2:
return process.nextTick(function afterTickOne() {
fn.call(null, arg1);
});
case 3:
return process.nextTick(function afterTickTwo() {
fn.call(null, arg1, arg2);
});
case 4:
return process.nextTick(function afterTickThree() {
fn.call(null, arg1, arg2, arg3);
});
default:
args = new Array(len - 1);
i = 0;
while (i < args.length) {
args[i++] = arguments[i];
}
return process.nextTick(function afterTick() {
fn.apply(null, args);
});
}
}
}).call(this,require('_process'))
},{"_process":9}],40:[function(require,module,exports){
/* eslint-disable node/no-deprecated-api */
var buffer = require('buffer')
var Buffer = buffer.Buffer
// alternative to using Object.keys for old browsers
function copyProps (src, dst) {
for (var key in src) {
dst[key] = src[key]
}
}
if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
module.exports = buffer
} else {
// Copy properties from require('buffer')
copyProps(buffer, exports)
exports.Buffer = SafeBuffer
}
function SafeBuffer (arg, encodingOrOffset, length) {
return Buffer(arg, encodingOrOffset, length)
}
// Copy static methods from Buffer
copyProps(Buffer, SafeBuffer)
SafeBuffer.from = function (arg, encodingOrOffset, length) {
if (typeof arg === 'number') {
throw new TypeError('Argument must not be a number')
}
return Buffer(arg, encodingOrOffset, length)
}
SafeBuffer.alloc = function (size, fill, encoding) {
if (typeof size !== 'number') {
throw new TypeError('Argument must be a number')
}
var buf = Buffer(size)
if (fill !== undefined) {
if (typeof encoding === 'string') {
buf.fill(fill, encoding)
} else {
buf.fill(fill)
}
} else {
buf.fill(0)
}
return buf
}
SafeBuffer.allocUnsafe = function (size) {
if (typeof size !== 'number') {
throw new TypeError('Argument must be a number')
}
return Buffer(size)
}
SafeBuffer.allocUnsafeSlow = function (size) {
if (typeof size !== 'number') {
throw new TypeError('Argument must be a number')
}
return buffer.SlowBuffer(size)
}
},{"buffer":8}],41:[function(require,module,exports){
/*
Copyright 2018 0kims association.
This file is part of snarkjs.
snarkjs is a free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your option)
any later version.
snarkjs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
snarkjs. If not, see <https://www.gnu.org/licenses/>.
*/
exports.original = {
setup: require("./src/setup_original.js"),
genProof: require("./src/prover_original.js"),
isValid: require("./src/verifier_original.js")
};
exports.groth = {
setup: require("./src/setup_groth.js"),
genProof: require("./src/prover_groth.js"),
isValid: require("./src/verifier_groth.js")
};
exports.kimleeoh = {
setup: require("./src/setup_kimleeoh.js"),
genProof: require("./src/prover_kimleeoh.js"),
isValid: require("./src/verifier_kimleeoh.js")
};
},{"./src/prover_groth.js":42,"./src/prover_kimleeoh.js":43,"./src/prover_original.js":44,"./src/setup_groth.js":45,"./src/setup_kimleeoh.js":46,"./src/setup_original.js":47,"./src/verifier_groth.js":48,"./src/verifier_kimleeoh.js":49,"./src/verifier_original.js":50}],42:[function(require,module,exports){
/*
Copyright 2018 0kims association.
This file is part of snarkjs.
snarkjs is a free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your option)
any later version.
snarkjs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
snarkjs. If not, see <https://www.gnu.org/licenses/>.
*/
/* Implementation of this paper: https://eprint.iacr.org/2016/260.pdf */
const bn128 = require("ffjavascript").bn128;
const PolField = require("ffjavascript").PolField;
const ZqField = require("ffjavascript").ZqField;
const PolF = new PolField(new ZqField(bn128.r));
const G1 = bn128.G1;
const G2 = bn128.G2;
module.exports = function genProof(vk_proof, witness, verbose) {
const proof = {};
const r = PolF.F.random();
const s = PolF.F.random();
/* Uncomment to generate a deterministic proof to debug
const r = PolF.F.zero;
const s = PolF.F.zero;
*/
proof.pi_a = G1.zero;
proof.pi_b = G2.zero;
proof.pi_c = G1.zero;
let pib1 = G1.zero;
// Skip public entries and the "1" signal that are forced by the verifier
for (let s= 0; s< vk_proof.nVars; s++) {
// pi_a = pi_a + A[s] * witness[s];
proof.pi_a = G1.add( proof.pi_a, G1.mulScalar( vk_proof.A[s], witness[s]));
// pi_b = pi_b + B[s] * witness[s];
proof.pi_b = G2.add( proof.pi_b, G2.mulScalar( vk_proof.B2[s], witness[s]));
pib1 = G1.add( pib1, G1.mulScalar( vk_proof.B1[s], witness[s]));
if ((verbose)&&(s%1000 == 1)) console.log("A, B1, B2: ", s);
}
for (let s= vk_proof.nPublic+1; s< vk_proof.nVars; s++) {
// pi_a = pi_a + A[s] * witness[s];
proof.pi_c = G1.add( proof.pi_c, G1.mulScalar( vk_proof.C[s], witness[s]));
if ((verbose)&&(s%1000 == 1)) console.log("C: ", s);
}
proof.pi_a = G1.add( proof.pi_a, vk_proof.vk_alfa_1 );
proof.pi_a = G1.add( proof.pi_a, G1.mulScalar( vk_proof.vk_delta_1, r ));
proof.pi_b = G2.add( proof.pi_b, vk_proof.vk_beta_2 );
proof.pi_b = G2.add( proof.pi_b, G2.mulScalar( vk_proof.vk_delta_2, s ));
pib1 = G1.add( pib1, vk_proof.vk_beta_1 );
pib1 = G1.add( pib1, G1.mulScalar( vk_proof.vk_delta_1, s ));
const h = calculateH(vk_proof, witness);
// proof.pi_c = G1.affine(proof.pi_c);
// console.log("pi_onlyc", proof.pi_c);
for (let i = 0; i < h.length; i++) {
// console.log(i + "->" + h[i].toString());
proof.pi_c = G1.add( proof.pi_c, G1.mulScalar( vk_proof.hExps[i], h[i]));
if ((verbose)&&(i%1000 == 1)) console.log("H: ", i);
}
// proof.pi_c = G1.affine(proof.pi_c);
// console.log("pi_candh", proof.pi_c);
proof.pi_c = G1.add( proof.pi_c, G1.mulScalar( proof.pi_a, s ));
proof.pi_c = G1.add( proof.pi_c, G1.mulScalar( pib1, r ));
proof.pi_c = G1.add( proof.pi_c, G1.mulScalar( vk_proof.vk_delta_1, PolF.F.neg(PolF.F.mul(r,s) )));
const publicSignals = witness.slice(1, vk_proof.nPublic+1);
proof.pi_a = G1.affine(proof.pi_a);
proof.pi_b = G2.affine(proof.pi_b);
proof.pi_c = G1.affine(proof.pi_c);
proof.protocol = "groth";
return {proof, publicSignals};
};
/*
// Old Method. (It's clear for academic understanding)
function calculateH(vk_proof, witness) {
const F = PolF.F;
const m = vk_proof.domainSize;
const polA_T = new Array(m).fill(PolF.F.zero);
const polB_T = new Array(m).fill(PolF.F.zero);
const polC_T = new Array(m).fill(PolF.F.zero);
for (let s=0; s<vk_proof.nVars; s++) {
for (let c in vk_proof.polsA[s]) {
polA_T[c] = F.add(polA_T[c], F.mul(witness[s], vk_proof.polsA[s][c]));
}
for (let c in vk_proof.polsB[s]) {
polB_T[c] = F.add(polB_T[c], F.mul(witness[s], vk_proof.polsB[s][c]));
}
for (let c in vk_proof.polsC[s]) {
polC_T[c] = F.add(polC_T[c], F.mul(witness[s], vk_proof.polsC[s][c]));
}
}
const polA_S = PolF.ifft(polA_T);
const polB_S = PolF.ifft(polB_T);
const polAB_S = PolF.mul(polA_S, polB_S);
const polC_S = PolF.ifft(polC_T);
const polABC_S = PolF.sub(polAB_S, polC_S);
const H_S = polABC_S.slice(m);
return H_S;
}
*/
function calculateH(vk_proof, witness) {
const F = PolF.F;
const m = vk_proof.domainSize;
const polA_T = new Array(m).fill(PolF.F.zero);
const polB_T = new Array(m).fill(PolF.F.zero);
for (let s=0; s<vk_proof.nVars; s++) {
for (let c in vk_proof.polsA[s]) {
polA_T[c] = F.add(polA_T[c], F.mul(witness[s], vk_proof.polsA[s][c]));
}
for (let c in vk_proof.polsB[s]) {
polB_T[c] = F.add(polB_T[c], F.mul(witness[s], vk_proof.polsB[s][c]));
}
}
const polA_S = PolF.ifft(polA_T);
const polB_S = PolF.ifft(polB_T);
// F(wx) = [1, w, w^2, ...... w^(m-1)] in time is the same than shift in in frequency
const r = PolF.log2(m)+1;
PolF._setRoots(r);
for (let i=0; i<polA_S.length; i++) {
polA_S[i] = PolF.F.mul( polA_S[i], PolF.roots[r][i]);
polB_S[i] = PolF.F.mul( polB_S[i], PolF.roots[r][i]);
}
const polA_Todd = PolF.fft(polA_S);
const polB_Todd = PolF.fft(polB_S);
const polAB_T = new Array(polA_S.length*2);
for (let i=0; i<polA_S.length; i++) {
polAB_T[2*i] = PolF.F.mul( polA_T[i], polB_T[i]);
polAB_T[2*i+1] = PolF.F.mul( polA_Todd[i], polB_Todd[i]);
}
// We only need the to half of the fft, so we could optimize at least by m multiplications.
let H_S = PolF.ifft(polAB_T);
H_S = H_S.slice(m);
return H_S;
}
},{"ffjavascript":12}],43:[function(require,module,exports){
(function (Buffer){
/*
Copyright 2018 0kims association.
This file is part of snarkjs.
snarkjs is a free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your option)
any later version.
snarkjs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
snarkjs. If not, see <https://www.gnu.org/licenses/>.
*/
/* Implementation of this paper: https://eprint.iacr.org/2016/260.pdf */
const bn128 = require("ffjavascript").bn128;
const PolField = require("ffjavascript").PolField;
const ZqField = require("ffjavascript").ZqField;
const createKeccakHash = require("keccak");
const utils = require("ffjavascript").utils;
const PolF = new PolField(new ZqField(bn128.r));
const G1 = bn128.G1;
const G2 = bn128.G2;
module.exports = function genProof(vk_proof, witness) {
const proof = {};
const r = PolF.F.random();
const s = PolF.F.random();
// const r = PolF.F.zero;
// const s = PolF.F.zero;
/* Uncomment to generate a deterministic proof to debug
const r = PolF.F.zero;
const s = PolF.F.zero;
*/
proof.pi_a = G1.zero;
proof.pi_b = G2.zero;
proof.pi_c = G1.zero;
let pib1 = G1.zero;
let piadelta = G1.zero;
// Skip public entries and the "1" signal that are forced by the verifier
for (let s= 0; s< vk_proof.nVars; s++) {
// pi_a = pi_a + A[s] * witness[s];
proof.pi_a = G1.add( proof.pi_a, G1.mulScalar( vk_proof.A[s], witness[s]));
// pi_b = pi_b + B[s] * witness[s];
proof.pi_b = G2.add( proof.pi_b, G2.mulScalar( vk_proof.B2[s], witness[s]));
piadelta = G1.add( piadelta, G1.mulScalar( vk_proof.Adelta[s], witness[s]));
pib1 = G1.add( pib1, G1.mulScalar( vk_proof.B1[s], witness[s]));
}
for (let s= vk_proof.nPublic+1; s< vk_proof.nVars; s++) {
// pi_a = pi_a + A[s] * witness[s];
proof.pi_c = G1.add( proof.pi_c, G1.mulScalar( vk_proof.C[s], witness[s]));
}
proof.pi_a = G1.add( proof.pi_a, vk_proof.vk_alfa_1 );
proof.pi_a = G1.add( proof.pi_a, G1.mulScalar( G1.g, r ));
piadelta = G1.add( piadelta, vk_proof.vk_alfadelta_1);
piadelta = G1.add( piadelta, G1.mulScalar( vk_proof.vk_delta_1, r ));
proof.pi_b = G2.add( proof.pi_b, vk_proof.vk_beta_2 );
proof.pi_b = G2.add( proof.pi_b, G2.mulScalar( G2.g, s ));
pib1 = G1.add( pib1, vk_proof.vk_beta_1 );
pib1 = G1.add( pib1, G1.mulScalar( G1.g, s ));
proof.pi_a = G1.affine(proof.pi_a);
proof.pi_b = G2.affine(proof.pi_b);
const buff = Buffer.concat([
utils.beInt2Buff(proof.pi_a[0],32),
utils.beInt2Buff(proof.pi_a[1],32),
utils.beInt2Buff(proof.pi_b[0][0],32),
utils.beInt2Buff(proof.pi_b[0][1],32),
utils.beInt2Buff(proof.pi_b[1][0],32),
utils.beInt2Buff(proof.pi_b[1][1],32)
]);
const h1buff = createKeccakHash("keccak256").update(buff).digest();
const h2buff = createKeccakHash("keccak256").update(h1buff).digest();
const h1 = utils.beBuff2int(h1buff);
const h2 = utils.beBuff2int(h2buff);
// const h1 = PolF.F.zero;
// const h2 = PolF.F.zero;
// console.log(h1.toString());
// console.log(h2.toString());
const h = calculateH(vk_proof, witness);
// proof.pi_c = G1.affine(proof.pi_c);
// console.log("pi_onlyc", proof.pi_c);
for (let i = 0; i < h.length; i++) {
// console.log(i + "->" + h[i].toString());
proof.pi_c = G1.add( proof.pi_c, G1.mulScalar( vk_proof.hExps[i], h[i]));
}
// proof.pi_c = G1.affine(proof.pi_c);
// console.log("pi_candh", proof.pi_c);
proof.pi_c = G1.add( proof.pi_c, G1.mulScalar( proof.pi_a, s ));
proof.pi_c = G1.add( proof.pi_c, G1.mulScalar( pib1, r ));
proof.pi_c = G1.add( proof.pi_c, G1.mulScalar( G1.g, PolF.F.neg(PolF.F.mul(r,s) )));
proof.pi_c = G1.add( proof.pi_c, G1.mulScalar( piadelta, h2 ));
proof.pi_c = G1.add( proof.pi_c, G1.mulScalar( pib1, h1 ));
proof.pi_c = G1.add( proof.pi_c, G1.mulScalar( vk_proof.vk_delta_1, PolF.F.mul(h1,h2)));
const publicSignals = witness.slice(1, vk_proof.nPublic+1);
proof.pi_c = G1.affine(proof.pi_c);
proof.protocol = "kimleeoh";
return {proof, publicSignals};
};
function calculateH(vk_proof, witness) {
const F = PolF.F;
const m = vk_proof.domainSize;
const polA_T = new Array(m).fill(PolF.F.zero);
const polB_T = new Array(m).fill(PolF.F.zero);
const polC_T = new Array(m).fill(PolF.F.zero);
for (let s=0; s<vk_proof.nVars; s++) {
for (let c in vk_proof.polsA[s]) {
polA_T[c] = F.add(polA_T[c], F.mul(witness[s], vk_proof.polsA[s][c]));
}
for (let c in vk_proof.polsB[s]) {
polB_T[c] = F.add(polB_T[c], F.mul(witness[s], vk_proof.polsB[s][c]));
}
for (let c in vk_proof.polsC[s]) {
polC_T[c] = F.add(polC_T[c], F.mul(witness[s], vk_proof.polsC[s][c]));
}
}
const polA_S = PolF.ifft(polA_T);
const polB_S = PolF.ifft(polB_T);
const polAB_S = PolF.mul(polA_S, polB_S);
const polC_S = PolF.ifft(polC_T);
const polABC_S = PolF.sub(polAB_S, polC_S);
const H_S = polABC_S.slice(m);
return H_S;
}
}).call(this,require("buffer").Buffer)
},{"buffer":8,"ffjavascript":12,"keccak":32}],44:[function(require,module,exports){
/*
Copyright 2018 0kims association.
This file is part of snarkjs.
snarkjs is a free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your option)
any later version.
snarkjs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
snarkjs. If not, see <https://www.gnu.org/licenses/>.
*/
const bn128 = require("ffjavascript").bn128;
const PolField = require("ffjavascript").PolField;
const ZqField = require("ffjavascript").ZqField;
const PolF = new PolField(new ZqField(bn128.r));
const G1 = bn128.G1;
const G2 = bn128.G2;
module.exports = function genProof(vk_proof, witness) {
const proof = {};
const d1 = PolF.F.random();
const d2 = PolF.F.random();
const d3 = PolF.F.random();
proof.pi_a = G1.zero;
proof.pi_ap = G1.zero;
proof.pi_b = G2.zero;
proof.pi_bp = G1.zero;
proof.pi_c = G1.zero;
proof.pi_cp = G1.zero;
proof.pi_kp = G1.zero;
proof.pi_h = G1.zero;
// Skip public entries and the "1" signal that are forced by the verifier
for (let s= vk_proof.nPublic+1; s< vk_proof.nVars; s++) {
// pi_a = pi_a + A[s] * witness[s];
proof.pi_a = G1.add( proof.pi_a, G1.mulScalar( vk_proof.A[s], witness[s]));
// pi_ap = pi_ap + Ap[s] * witness[s];
proof.pi_ap = G1.add( proof.pi_ap, G1.mulScalar( vk_proof.Ap[s], witness[s]));
}
for (let s= 0; s< vk_proof.nVars; s++) {
// pi_a = pi_a + A[s] * witness[s];
proof.pi_b = G2.add( proof.pi_b, G2.mulScalar( vk_proof.B[s], witness[s]));
// pi_ap = pi_ap + Ap[s] * witness[s];
proof.pi_bp = G1.add( proof.pi_bp, G1.mulScalar( vk_proof.Bp[s], witness[s]));
// pi_a = pi_a + A[s] * witness[s];
proof.pi_c = G1.add( proof.pi_c, G1.mulScalar( vk_proof.C[s], witness[s]));
// pi_ap = pi_ap + Ap[s] * witness[s];
proof.pi_cp = G1.add( proof.pi_cp, G1.mulScalar( vk_proof.Cp[s], witness[s]));
// pi_ap = pi_ap + Ap[s] * witness[s];
proof.pi_kp = G1.add( proof.pi_kp, G1.mulScalar( vk_proof.Kp[s], witness[s]));
}
proof.pi_a = G1.add( proof.pi_a, G1.mulScalar( vk_proof.A[vk_proof.nVars], d1));
proof.pi_ap = G1.add( proof.pi_ap, G1.mulScalar( vk_proof.Ap[vk_proof.nVars], d1));
proof.pi_b = G2.add( proof.pi_b, G2.mulScalar( vk_proof.B[vk_proof.nVars], d2));
proof.pi_bp = G1.add( proof.pi_bp, G1.mulScalar( vk_proof.Bp[vk_proof.nVars], d2));
proof.pi_c = G1.add( proof.pi_c, G1.mulScalar( vk_proof.C[vk_proof.nVars], d3));
proof.pi_cp = G1.add( proof.pi_cp, G1.mulScalar( vk_proof.Cp[vk_proof.nVars], d3));
proof.pi_kp = G1.add( proof.pi_kp, G1.mulScalar( vk_proof.Kp[vk_proof.nVars ], d1));
proof.pi_kp = G1.add( proof.pi_kp, G1.mulScalar( vk_proof.Kp[vk_proof.nVars+1], d2));
proof.pi_kp = G1.add( proof.pi_kp, G1.mulScalar( vk_proof.Kp[vk_proof.nVars+2], d3));
/*
let polA = [];
let polB = [];
let polC = [];
for (let s= 0; s< vk_proof.nVars; s++) {
polA = PolF.add(
polA,
PolF.mul(
vk_proof.polsA[s],
[witness[s]] ));
polB = PolF.add(
polB,
PolF.mul(
vk_proof.polsB[s],
[witness[s]] ));
polC = PolF.add(
polC,
PolF.mul(
vk_proof.polsC[s],
[witness[s]] ));
}
let polFull = PolF.sub(PolF.mul( polA, polB), polC);
const h = PolF.div(polFull, vk_proof.polZ );
*/
const h = calculateH(vk_proof, witness, d1, d2, d3);
// console.log(h.length + "/" + vk_proof.hExps.length);
for (let i = 0; i < h.length; i++) {
proof.pi_h = G1.add( proof.pi_h, G1.mulScalar( vk_proof.hExps[i], h[i]));
}
proof.pi_a = G1.affine(proof.pi_a);
proof.pi_b = G2.affine(proof.pi_b);
proof.pi_c = G1.affine(proof.pi_c);
proof.pi_ap = G1.affine(proof.pi_ap);
proof.pi_bp = G1.affine(proof.pi_bp);
proof.pi_cp = G1.affine(proof.pi_cp);
proof.pi_kp = G1.affine(proof.pi_kp);
proof.pi_h = G1.affine(proof.pi_h);
// proof.h=h;
proof.protocol = "original";
const publicSignals = witness.slice(1, vk_proof.nPublic+1);
return {proof, publicSignals};
};
function calculateH(vk_proof, witness, d1, d2, d3) {
const F = PolF.F;
const m = vk_proof.domainSize;
const polA_T = new Array(m).fill(PolF.F.zero);
const polB_T = new Array(m).fill(PolF.F.zero);
const polC_T = new Array(m).fill(PolF.F.zero);
for (let s=0; s<vk_proof.nVars; s++) {
for (let c in vk_proof.polsA[s]) {
polA_T[c] = F.add(polA_T[c], F.mul(witness[s], vk_proof.polsA[s][c]));
}
for (let c in vk_proof.polsB[s]) {
polB_T[c] = F.add(polB_T[c], F.mul(witness[s], vk_proof.polsB[s][c]));
}
for (let c in vk_proof.polsC[s]) {
polC_T[c] = F.add(polC_T[c], F.mul(witness[s], vk_proof.polsC[s][c]));
}
}
const polA_S = PolF.ifft(polA_T);
const polB_S = PolF.ifft(polB_T);
const polAB_S = PolF.mul(polA_S, polB_S);
const polC_S = PolF.ifft(polC_T);
const polABC_S = PolF.sub(polAB_S, polC_S);
const polZ_S = new Array(m+1).fill(F.zero);
polZ_S[m] = F.one;
polZ_S[0] = F.neg(F.one);
let H_S = PolF.div(polABC_S, polZ_S);
/*
const H2S = PolF.mul(H_S, polZ_S);
if (PolF.equals(H2S, polABC_S)) {
console.log("Is Divisible!");
} else {
console.log("ERROR: Not divisible!");
}
*/
/* add coefficients of the polynomial (d2*A + d1*B - d3) + d1*d2*Z */
H_S = PolF.extend(H_S, m+1);
for (let i=0; i<m; i++) {
const d2A = PolF.F.mul(d2, polA_S[i]);
const d1B = PolF.F.mul(d1, polB_S[i]);
H_S[i] = PolF.F.add(H_S[i], PolF.F.add(d2A, d1B));
}
H_S[0] = PolF.F.sub(H_S[0], d3);
// Z = x^m -1
const d1d2 = PolF.F.mul(d1, d2);
H_S[m] = PolF.F.add(H_S[m], d1d2);
H_S[0] = PolF.F.sub(H_S[0], d1d2);
H_S = PolF.reduce(H_S);
return H_S;
}
},{"ffjavascript":12}],45:[function(require,module,exports){
/*
Copyright 2018 0kims association.
This file is part of snarkjs.
snarkjs is a free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your option)
any later version.
snarkjs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
snarkjs. If not, see <https://www.gnu.org/licenses/>.
*/
/* Implementation of this paper: https://eprint.iacr.org/2016/260.pdf */
const bigInt = require("big-integer");
const bn128 = require("ffjavascript").bn128;
const PolField = require("ffjavascript").PolField;
const ZqField = require("ffjavascript").ZqField;
const G1 = bn128.G1;
const G2 = bn128.G2;
const PolF = new PolField(new ZqField(bn128.r));
const F = new ZqField(bn128.r);
module.exports = function setup(circuit, verbose) {
const setup = {
vk_proof : {
protocol: "groth",
nVars: circuit.nVars,
nPublic: circuit.nPubInputs + circuit.nOutputs
},
vk_verifier: {
protocol: "groth",
nPublic: circuit.nPubInputs + circuit.nOutputs
},
toxic: {}
};
setup.vk_proof.domainBits = PolF.log2(circuit.nConstraints + circuit.nPubInputs + circuit.nOutputs +1 -1) +1;
setup.vk_proof.domainSize = 1 << setup.vk_proof.domainBits;
calculatePolinomials(setup, circuit);
setup.toxic.t = F.random();
calculateEncriptedValuesAtT(setup, circuit, verbose);
return setup;
};
function calculatePolinomials(setup, circuit) {
setup.vk_proof.polsA = new Array(circuit.nVars);
setup.vk_proof.polsB = new Array(circuit.nVars);
setup.vk_proof.polsC = new Array(circuit.nVars);
for (let i=0; i<circuit.nVars; i++) {
setup.vk_proof.polsA[i] = {};
setup.vk_proof.polsB[i] = {};
setup.vk_proof.polsC[i] = {};
}
for (let c=0; c<circuit.nConstraints; c++) {
for (let s in circuit.constraints[c][0]) {
setup.vk_proof.polsA[s][c] = circuit.constraints[c][0][s];
}
for (let s in circuit.constraints[c][1]) {
setup.vk_proof.polsB[s][c] = circuit.constraints[c][1][s];
}
for (let s in circuit.constraints[c][2]) {
setup.vk_proof.polsC[s][c] = circuit.constraints[c][2][s];
}
}
/**
* add and process the constraints
* input_i * 0 = 0
* to ensure soundness of input consistency
*/
for (let i = 0; i < circuit.nPubInputs + circuit.nOutputs + 1; ++i)
{
setup.vk_proof.polsA[i][circuit.nConstraints + i] = F.one;
}
}
function calculateValuesAtT(setup, circuit) {
const z_t = PolF.computeVanishingPolinomial(setup.vk_proof.domainBits, setup.toxic.t);
const u = PolF.evaluateLagrangePolynomials(setup.vk_proof.domainBits, setup.toxic.t);
const a_t = new Array(circuit.nVars).fill(F.zero);
const b_t = new Array(circuit.nVars).fill(F.zero);
const c_t = new Array(circuit.nVars).fill(F.zero);
// TODO: substitute setup.polsA for coeficients
for (let s=0; s<circuit.nVars; s++) {
for (let c in setup.vk_proof.polsA[s]) {
a_t[s] = F.add(a_t[s], F.mul(u[c], setup.vk_proof.polsA[s][c]));
}
for (let c in setup.vk_proof.polsB[s]) {
b_t[s] = F.add(b_t[s], F.mul(u[c], setup.vk_proof.polsB[s][c]));
}
for (let c in setup.vk_proof.polsC[s]) {
c_t[s] = F.add(c_t[s], F.mul(u[c], setup.vk_proof.polsC[s][c]));
}
}
return {a_t, b_t, c_t, z_t};
}
function calculateEncriptedValuesAtT(setup, circuit, verbose) {
const v = calculateValuesAtT(setup, circuit);
setup.vk_proof.A = new Array(circuit.nVars);
setup.vk_proof.B1 = new Array(circuit.nVars);
setup.vk_proof.B2 = new Array(circuit.nVars);
setup.vk_proof.C = new Array(circuit.nVars);
setup.vk_verifier.IC = new Array(circuit.nPubInputs + circuit.nOutputs + 1);
setup.toxic.kalfa = F.random();
setup.toxic.kbeta = F.random();
setup.toxic.kgamma = F.random();
setup.toxic.kdelta = F.random();
let invDelta = F.inv(setup.toxic.kdelta);
let invGamma = F.inv(setup.toxic.kgamma);
setup.vk_proof.vk_alfa_1 = G1.affine(G1.mulScalar( G1.g, setup.toxic.kalfa));
setup.vk_proof.vk_beta_1 = G1.affine(G1.mulScalar( G1.g, setup.toxic.kbeta));
setup.vk_proof.vk_delta_1 = G1.affine(G1.mulScalar( G1.g, setup.toxic.kdelta));
setup.vk_proof.vk_beta_2 = G2.affine(G2.mulScalar( G2.g, setup.toxic.kbeta));
setup.vk_proof.vk_delta_2 = G2.affine(G2.mulScalar( G2.g, setup.toxic.kdelta));
setup.vk_verifier.vk_alfa_1 = G1.affine(G1.mulScalar( G1.g, setup.toxic.kalfa));
setup.vk_verifier.vk_beta_2 = G2.affine(G2.mulScalar( G2.g, setup.toxic.kbeta));
setup.vk_verifier.vk_gamma_2 = G2.affine(G2.mulScalar( G2.g, setup.toxic.kgamma));
setup.vk_verifier.vk_delta_2 = G2.affine(G2.mulScalar( G2.g, setup.toxic.kdelta));
setup.vk_verifier.vk_alfabeta_12 = bn128.pairing( setup.vk_verifier.vk_alfa_1 , setup.vk_verifier.vk_beta_2 );
for (let s=0; s<circuit.nVars; s++) {
const A = G1.mulScalar(G1.g, v.a_t[s]);
setup.vk_proof.A[s] = A;
const B1 = G1.mulScalar(G1.g, v.b_t[s]);
setup.vk_proof.B1[s] = B1;
const B2 = G2.mulScalar(G2.g, v.b_t[s]);
setup.vk_proof.B2[s] = B2;
if ((verbose)&&(s%1000 == 1)) console.log("A, B1, B2: ", s);
}
for (let s=0; s<=setup.vk_proof.nPublic; s++) {
let ps =
F.mul(
invGamma,
F.add(
F.add(
F.mul(v.a_t[s], setup.toxic.kbeta),
F.mul(v.b_t[s], setup.toxic.kalfa)),
v.c_t[s]));
const IC = G1.mulScalar(G1.g, ps);
setup.vk_verifier.IC[s]=IC;
}
for (let s=setup.vk_proof.nPublic+1; s<circuit.nVars; s++) {
let ps =
F.mul(
invDelta,
F.add(
F.add(
F.mul(v.a_t[s], setup.toxic.kbeta),
F.mul(v.b_t[s], setup.toxic.kalfa)),
v.c_t[s]));
const C = G1.mulScalar(G1.g, ps);
setup.vk_proof.C[s]=C;
if ((verbose)&&(s%1000 == 1)) console.log("C: ", s);
}
// Calculate HExps
const maxH = setup.vk_proof.domainSize+1;
setup.vk_proof.hExps = new Array(maxH);
const zod = F.mul(invDelta, v.z_t);
setup.vk_proof.hExps[0] = G1.affine(G1.mulScalar(G1.g, zod));
let eT = setup.toxic.t;
for (let i=1; i<maxH; i++) {
setup.vk_proof.hExps[i] = G1.mulScalar(G1.g, F.mul(eT, zod));
eT = F.mul(eT, setup.toxic.t);
if ((verbose)&&(i%1000 == 1)) console.log("Tau: ", i);
}
G1.multiAffine(setup.vk_proof.A);
G1.multiAffine(setup.vk_proof.B1);
G2.multiAffine(setup.vk_proof.B2);
G1.multiAffine(setup.vk_proof.C);
G1.multiAffine(setup.vk_proof.hExps);
G1.multiAffine(setup.vk_verifier.IC);
}
},{"big-integer":6,"ffjavascript":12}],46:[function(require,module,exports){
/*
Copyright 2018 0kims association.
This file is part of snarkjs.
snarkjs is a free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your option)
any later version.
snarkjs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
snarkjs. If not, see <https://www.gnu.org/licenses/>.
*/
/* Implementation of this paper: https://eprint.iacr.org/2016/260.pdf */
const bigInt = require("big-integer");
const bn128 = require("ffjavascript").bn128;
const PolField = require("ffjavascript").PolField;
const ZqField = require("ffjavascript").ZqField;
const G1 = bn128.G1;
const G2 = bn128.G2;
const PolF = new PolField(new ZqField(bn128.r));
const F = new ZqField(bn128.r);
module.exports = function setup(circuit) {
const setup = {
vk_proof : {
protocol: "kimleeoh",
nVars: circuit.nVars,
nPublic: circuit.nPubInputs + circuit.nOutputs
},
vk_verifier: {
protocol: "kimleeoh",
nPublic: circuit.nPubInputs + circuit.nOutputs
},
toxic: {}
};
setup.vk_proof.domainBits = PolF.log2(circuit.nConstraints + circuit.nPubInputs + circuit.nOutputs +1 -1) +1;
setup.vk_proof.domainSize = 1 << setup.vk_proof.domainBits;
calculatePolinomials(setup, circuit);
setup.toxic.t = F.random();
calculateEncriptedValuesAtT(setup, circuit);
return setup;
};
function calculatePolinomials(setup, circuit) {
setup.vk_proof.polsA = new Array(circuit.nVars);
setup.vk_proof.polsB = new Array(circuit.nVars);
setup.vk_proof.polsC = new Array(circuit.nVars);
for (let i=0; i<circuit.nVars; i++) {
setup.vk_proof.polsA[i] = {};
setup.vk_proof.polsB[i] = {};
setup.vk_proof.polsC[i] = {};
}
for (let c=0; c<circuit.nConstraints; c++) {
for (let s in circuit.constraints[c][0]) {
setup.vk_proof.polsA[s][c] = circuit.constraints[c][0][s];
}
for (let s in circuit.constraints[c][1]) {
setup.vk_proof.polsB[s][c] = circuit.constraints[c][1][s];
}
for (let s in circuit.constraints[c][2]) {
setup.vk_proof.polsC[s][c] = circuit.constraints[c][2][s];
}
}
/**
* add and process the constraints
* input_i * 0 = 0
* to ensure soundness of input consistency
*/
for (let i = 0; i < circuit.nPubInputs + circuit.nOutputs + 1; ++i)
{
setup.vk_proof.polsA[i][circuit.nConstraints + i] = F.one;
}
}
function calculateValuesAtT(setup, circuit) {
const z_t = PolF.computeVanishingPolinomial(setup.vk_proof.domainBits, setup.toxic.t);
const u = PolF.evaluateLagrangePolynomials(setup.vk_proof.domainBits, setup.toxic.t);
const a_t = new Array(circuit.nVars).fill(F.zero);
const b_t = new Array(circuit.nVars).fill(F.zero);
const c_t = new Array(circuit.nVars).fill(F.zero);
// TODO: substitute setup.polsA for coeficients
for (let s=0; s<circuit.nVars; s++) {
for (let c in setup.vk_proof.polsA[s]) {
a_t[s] = F.add(a_t[s], F.mul(u[c], setup.vk_proof.polsA[s][c]));
}
for (let c in setup.vk_proof.polsB[s]) {
b_t[s] = F.add(b_t[s], F.mul(u[c], setup.vk_proof.polsB[s][c]));
}
for (let c in setup.vk_proof.polsC[s]) {
c_t[s] = F.add(c_t[s], F.mul(u[c], setup.vk_proof.polsC[s][c]));
}
}
return {a_t, b_t, c_t, z_t};
}
function calculateEncriptedValuesAtT(setup, circuit) {
const v = calculateValuesAtT(setup, circuit);
setup.vk_proof.A = new Array(circuit.nVars);
setup.vk_proof.Adelta = new Array(circuit.nVars);
setup.vk_proof.B1 = new Array(circuit.nVars);
setup.vk_proof.B2 = new Array(circuit.nVars);
setup.vk_proof.C = new Array(circuit.nVars);
setup.vk_verifier.IC = new Array(circuit.nPubInputs + circuit.nOutputs + 1);
setup.toxic.kalfa = F.random();
setup.toxic.kbeta = F.random();
setup.toxic.kgamma = F.random();
setup.toxic.kdelta = F.random();
const gammaSquare = F.mul(setup.toxic.kgamma, setup.toxic.kgamma);
setup.vk_proof.vk_alfa_1 = G1.affine(G1.mulScalar( G1.g, setup.toxic.kalfa));
setup.vk_proof.vk_beta_1 = G1.affine(G1.mulScalar( G1.g, setup.toxic.kbeta));
setup.vk_proof.vk_delta_1 = G1.affine(G1.mulScalar( G1.g, setup.toxic.kdelta));
setup.vk_proof.vk_alfadelta_1 = G1.affine(G1.mulScalar( G1.g, F.mul(setup.toxic.kalfa, setup.toxic.kdelta)));
setup.vk_proof.vk_beta_2 = G2.affine(G2.mulScalar( G2.g, setup.toxic.kbeta));
setup.vk_verifier.vk_alfa_1 = G1.affine(G1.mulScalar( G1.g, setup.toxic.kalfa));
setup.vk_verifier.vk_beta_2 = G2.affine(G2.mulScalar( G2.g, setup.toxic.kbeta));
setup.vk_verifier.vk_gamma_2 = G2.affine(G2.mulScalar( G2.g, setup.toxic.kgamma));
setup.vk_verifier.vk_delta_2 = G2.affine(G2.mulScalar( G2.g, setup.toxic.kdelta));
setup.vk_verifier.vk_alfabeta_12 = bn128.pairing( setup.vk_verifier.vk_alfa_1 , setup.vk_verifier.vk_beta_2 );
for (let s=0; s<circuit.nVars; s++) {
const A = G1.affine(G1.mulScalar(G1.g, F.mul(setup.toxic.kgamma, v.a_t[s])));
setup.vk_proof.A[s] = A;
setup.vk_proof.Adelta[s] = G1.affine(G1.mulScalar(A, setup.toxic.kdelta));
const B1 = G1.affine(G1.mulScalar(G1.g, F.mul(setup.toxic.kgamma, v.b_t[s])));
setup.vk_proof.B1[s] = B1;
const B2 = G2.affine(G2.mulScalar(G2.g, F.mul(setup.toxic.kgamma, v.b_t[s])));
setup.vk_proof.B2[s] = B2;
}
for (let s=0; s<=setup.vk_proof.nPublic; s++) {
let ps =
F.add(
F.mul(
setup.toxic.kgamma,
v.c_t[s]
),
F.add(
F.mul(
setup.toxic.kbeta,
v.a_t[s]
),
F.mul(
setup.toxic.kalfa,
v.b_t[s]
)
)
);
const IC = G1.affine(G1.mulScalar(G1.g, ps));
setup.vk_verifier.IC[s]=IC;
}
for (let s=setup.vk_proof.nPublic+1; s<circuit.nVars; s++) {
let ps =
F.add(
F.mul(
gammaSquare,
v.c_t[s]
),
F.add(
F.mul(
F.mul(setup.toxic.kbeta, setup.toxic.kgamma),
v.a_t[s]
),
F.mul(
F.mul(setup.toxic.kalfa, setup.toxic.kgamma),
v.b_t[s]
)
)
);
const C = G1.affine(G1.mulScalar(G1.g, ps));
setup.vk_proof.C[s]=C;
}
// Calculate HExps
const maxH = setup.vk_proof.domainSize+1;
setup.vk_proof.hExps = new Array(maxH);
const zod = F.mul(gammaSquare, v.z_t);
setup.vk_proof.hExps[0] = G1.affine(G1.mulScalar(G1.g, zod));
let eT = setup.toxic.t;
for (let i=1; i<maxH; i++) {
setup.vk_proof.hExps[i] = G1.affine(G1.mulScalar(G1.g, F.mul(eT, zod)));
eT = F.mul(eT, setup.toxic.t);
}
}
},{"big-integer":6,"ffjavascript":12}],47:[function(require,module,exports){
/*
Copyright 2018 0kims association.
This file is part of snarkjs.
snarkjs is a free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your option)
any later version.
snarkjs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
snarkjs. If not, see <https://www.gnu.org/licenses/>.
*/
const bigInt = require("big-integer");
const bn128 = require("ffjavascript").bn128;
const PolField = require("ffjavascript").PolField;
const ZqField = require("ffjavascript").ZqField;
const G1 = bn128.G1;
const G2 = bn128.G2;
const PolF = new PolField(new ZqField(bn128.r));
const F = new ZqField(bn128.r);
module.exports = function setup(circuit) {
const setup = {
vk_proof : {
protocol: "original",
nVars: circuit.nVars,
nPublic: circuit.nPubInputs + circuit.nOutputs
},
vk_verifier: {
protocol: "original",
nPublic: circuit.nPubInputs + circuit.nOutputs
},
toxic: {}
};
setup.vk_proof.domainBits = PolF.log2(circuit.nConstraints + circuit.nPubInputs + circuit.nOutputs +1 -1) +1;
setup.vk_proof.domainSize = 1 << setup.vk_proof.domainBits;
calculatePolinomials(setup, circuit);
setup.toxic.t = F.random();
calculateEncriptedValuesAtT(setup, circuit);
calculateHexps(setup, circuit);
return setup;
};
function calculatePolinomials(setup, circuit) {
setup.vk_proof.polsA = new Array(circuit.nVars);
setup.vk_proof.polsB = new Array(circuit.nVars);
setup.vk_proof.polsC = new Array(circuit.nVars);
for (let i=0; i<circuit.nVars; i++) {
setup.vk_proof.polsA[i] = {};
setup.vk_proof.polsB[i] = {};
setup.vk_proof.polsC[i] = {};
}
for (let c=0; c<circuit.nConstraints; c++) {
for (let s in circuit.constraints[c][0]) {
setup.vk_proof.polsA[s][c] = circuit.constraints[c][0][s];
}
for (let s in circuit.constraints[c][1]) {
setup.vk_proof.polsB[s][c] = circuit.constraints[c][1][s];
}
for (let s in circuit.constraints[c][2]) {
setup.vk_proof.polsC[s][c] = circuit.constraints[c][2][s];
}
}
/**
* add and process the constraints
* input_i * 0 = 0
* to ensure soundness of input consistency
*/
for (let i = 0; i < circuit.nPubInputs + circuit.nOutputs + 1; ++i)
{
setup.vk_proof.polsA[i][circuit.nConstraints + i] = F.one;
}
}
function calculateValuesAtT(setup, circuit) {
const z_t = PolF.computeVanishingPolinomial(setup.vk_proof.domainBits, setup.toxic.t);
const u = PolF.evaluateLagrangePolynomials(setup.vk_proof.domainBits, setup.toxic.t);
const a_t = new Array(circuit.nVars).fill(F.zero);
const b_t = new Array(circuit.nVars).fill(F.zero);
const c_t = new Array(circuit.nVars).fill(F.zero);
// TODO: substitute setup.polsA for coeficients
for (let s=0; s<circuit.nVars; s++) {
for (let c in setup.vk_proof.polsA[s]) {
a_t[s] = F.add(a_t[s], F.mul(u[c], setup.vk_proof.polsA[s][c]));
}
for (let c in setup.vk_proof.polsB[s]) {
b_t[s] = F.add(b_t[s], F.mul(u[c], setup.vk_proof.polsB[s][c]));
}
for (let c in setup.vk_proof.polsC[s]) {
c_t[s] = F.add(c_t[s], F.mul(u[c], setup.vk_proof.polsC[s][c]));
}
}
return {a_t, b_t, c_t, z_t};
}
function calculateEncriptedValuesAtT(setup, circuit) {
const v = calculateValuesAtT(setup, circuit);
setup.vk_proof.A = new Array(circuit.nVars+1);
setup.vk_proof.B = new Array(circuit.nVars+1);
setup.vk_proof.C = new Array(circuit.nVars+1);
setup.vk_proof.Ap = new Array(circuit.nVars+1);
setup.vk_proof.Bp = new Array(circuit.nVars+1);
setup.vk_proof.Cp = new Array(circuit.nVars+1);
setup.vk_proof.Kp = new Array(circuit.nVars+3);
setup.vk_verifier.IC = new Array(circuit.nPubInputs);
setup.vk_verifier.IC = new Array(circuit.nPubInputs + circuit.nOutputs + 1);
setup.toxic.ka = F.random();
setup.toxic.kb = F.random();
setup.toxic.kc = F.random();
setup.toxic.ra = F.random();
setup.toxic.rb = F.random();
setup.toxic.rc = F.mul(setup.toxic.ra, setup.toxic.rb);
setup.toxic.kbeta = F.random();
setup.toxic.kgamma = F.random();
const gb = F.mul(setup.toxic.kbeta, setup.toxic.kgamma);
setup.vk_verifier.vk_a = G2.affine(G2.mulScalar( G2.g, setup.toxic.ka));
setup.vk_verifier.vk_b = G1.affine(G1.mulScalar( G1.g, setup.toxic.kb));
setup.vk_verifier.vk_c = G2.affine(G2.mulScalar( G2.g, setup.toxic.kc));
setup.vk_verifier.vk_gb_1 = G1.affine(G1.mulScalar( G1.g, gb));
setup.vk_verifier.vk_gb_2 = G2.affine(G2.mulScalar( G2.g, gb));
setup.vk_verifier.vk_g = G2.affine(G2.mulScalar( G2.g, setup.toxic.kgamma));
for (let s=0; s<circuit.nVars; s++) {
// A[i] = G1 * polA(t)
const raat = F.mul(setup.toxic.ra, v.a_t[s]);
const A = G1.affine(G1.mulScalar(G1.g, raat));
setup.vk_proof.A[s] = A;
if (s <= setup.vk_proof.nPublic) {
setup.vk_verifier.IC[s]=A;
}
// B1[i] = G1 * polB(t)
const rbbt = F.mul(setup.toxic.rb, v.b_t[s]);
const B1 = G1.affine(G1.mulScalar(G1.g, rbbt));
// B2[i] = G2 * polB(t)
const B2 = G2.affine(G2.mulScalar(G2.g, rbbt));
setup.vk_proof.B[s]=B2;
// C[i] = G1 * polC(t)
const rcct = F.mul(setup.toxic.rc, v.c_t[s]);
const C = G1.affine(G1.mulScalar( G1.g, rcct));
setup.vk_proof.C[s] =C;
// K = G1 * (A+B+C)
const kt = F.add(F.add(raat, rbbt), rcct);
const K = G1.affine(G1.mulScalar( G1.g, kt));
/*
// Comment this lines to improve the process
const Ktest = G1.affine(G1.add(G1.add(A, B1), C));
if (!G1.equals(K, Ktest)) {
console.log ("=====FAIL======");
}
*/
if (s > setup.vk_proof.nPublic) {
setup.vk_proof.Ap[s] = G1.affine(G1.mulScalar(A, setup.toxic.ka));
}
setup.vk_proof.Bp[s] = G1.affine(G1.mulScalar(B1, setup.toxic.kb));
setup.vk_proof.Cp[s] = G1.affine(G1.mulScalar(C, setup.toxic.kc));
setup.vk_proof.Kp[s] = G1.affine(G1.mulScalar(K, setup.toxic.kbeta));
}
// Extra coeficients
const A = G1.mulScalar( G1.g, F.mul(setup.toxic.ra, v.z_t));
setup.vk_proof.A[circuit.nVars] = G1.affine(A);
setup.vk_proof.Ap[circuit.nVars] = G1.affine(G1.mulScalar(A, setup.toxic.ka));
const B1 = G1.mulScalar( G1.g, F.mul(setup.toxic.rb, v.z_t));
const B2 = G2.mulScalar( G2.g, F.mul(setup.toxic.rb, v.z_t));
setup.vk_proof.B[circuit.nVars] = G2.affine(B2);
setup.vk_proof.Bp[circuit.nVars] = G1.affine(G1.mulScalar(B1, setup.toxic.kb));
const C = G1.mulScalar( G1.g, F.mul(setup.toxic.rc, v.z_t));
setup.vk_proof.C[circuit.nVars] = G1.affine(C);
setup.vk_proof.Cp[circuit.nVars] = G1.affine(G1.mulScalar(C, setup.toxic.kc));
setup.vk_proof.Kp[circuit.nVars ] = G1.affine(G1.mulScalar(A, setup.toxic.kbeta));
setup.vk_proof.Kp[circuit.nVars+1] = G1.affine(G1.mulScalar(B1, setup.toxic.kbeta));
setup.vk_proof.Kp[circuit.nVars+2] = G1.affine(G1.mulScalar(C, setup.toxic.kbeta));
// setup.vk_verifier.A[0] = G1.affine(G1.add(setup.vk_verifier.A[0], setup.vk_proof.A[circuit.nVars]));
// vk_z
setup.vk_verifier.vk_z = G2.affine(G2.mulScalar(
G2.g,
F.mul(setup.toxic.rc, v.z_t)));
}
function calculateHexps(setup) {
const maxH = setup.vk_proof.domainSize+1;
setup.vk_proof.hExps = new Array(maxH);
setup.vk_proof.hExps[0] = G1.g;
let eT = setup.toxic.t;
for (let i=1; i<maxH; i++) {
setup.vk_proof.hExps[i] = G1.affine(G1.mulScalar(G1.g, eT));
eT = F.mul(eT, setup.toxic.t);
}
}
},{"big-integer":6,"ffjavascript":12}],48:[function(require,module,exports){
/*
Copyright 2018 0kims association.
This file is part of snarkjs.
snarkjs is a free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your option)
any later version.
snarkjs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
snarkjs. If not, see <https://www.gnu.org/licenses/>.
*/
/* Implementation of this paper: https://eprint.iacr.org/2016/260.pdf */
const bn128 = require("ffjavascript").bn128;
const G1 = bn128.G1;
module.exports = function isValid(vk_verifier, proof, publicSignals) {
let cpub = vk_verifier.IC[0];
for (let s= 0; s< vk_verifier.nPublic; s++) {
cpub = G1.add( cpub, G1.mulScalar( vk_verifier.IC[s+1], publicSignals[s]));
}
if (! bn128.F12.eq(
bn128.pairing( proof.pi_a , proof.pi_b ),
bn128.F12.mul(
vk_verifier.vk_alfabeta_12,
bn128.F12.mul(
bn128.pairing( cpub , vk_verifier.vk_gamma_2 ),
bn128.pairing( proof.pi_c , vk_verifier.vk_delta_2 )
))))
return false;
return true;
};
},{"ffjavascript":12}],49:[function(require,module,exports){
(function (Buffer){
/*
Copyright 2018 0kims association.
This file is part of snarkjs.
snarkjs is a free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your option)
any later version.
snarkjs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
snarkjs. If not, see <https://www.gnu.org/licenses/>.
*/
/* Implementation of this paper: https://eprint.iacr.org/2016/260.pdf */
const bn128 = require("ffjavascript").bn128;
const createKeccakHash = require("keccak");
const utils = require("ffjavascript").utils;
const G1 = bn128.G1;
const G2 = bn128.G2;
module.exports = function isValid(vk_verifier, proof, publicSignals) {
let cpub = vk_verifier.IC[0];
for (let s= 0; s< vk_verifier.nPublic; s++) {
cpub = G1.add( cpub, G1.mulScalar( vk_verifier.IC[s+1], publicSignals[s]));
}
const buff = Buffer.concat([
utils.beInt2Buff(proof.pi_a[0], 32),
utils.beInt2Buff(proof.pi_a[1], 32),
utils.beInt2Buff(proof.pi_b[0][0], 32),
utils.beInt2Buff(proof.pi_b[0][1], 32),
utils.beInt2Buff(proof.pi_b[1][0], 32),
utils.beInt2Buff(proof.pi_b[1][1], 32),
]);
const h1buff = createKeccakHash("keccak256").update(buff).digest();
const h2buff = createKeccakHash("keccak256").update(h1buff).digest();
const h1 = utils.beBuff2int(h1buff);
const h2 = utils.beBuff2int(h2buff);
// const h1 = bn128.Fr.zero;
// const h2 = bn128.Fr.zero;
// console.log(h1.toString());
// console.log(h2.toString());
if (! bn128.F12.eq(
bn128.pairing(
G1.add(proof.pi_a, G1.mulScalar(G1.g, h1)),
G2.add(proof.pi_b, G2.mulScalar(vk_verifier.vk_delta_2, h2))
),
bn128.F12.mul(
vk_verifier.vk_alfabeta_12,
bn128.F12.mul(
bn128.pairing( cpub , vk_verifier.vk_gamma_2 ),
bn128.pairing( proof.pi_c , G2.g )
))))
return false;
return true;
};
}).call(this,require("buffer").Buffer)
},{"buffer":8,"ffjavascript":12,"keccak":32}],50:[function(require,module,exports){
/*
Copyright 2018 0kims association.
This file is part of snarkjs.
snarkjs is a free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your option)
any later version.
snarkjs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
snarkjs. If not, see <https://www.gnu.org/licenses/>.
*/
const bn128 = require("ffjavascript").bn128;
const G1 = bn128.G1;
const G2 = bn128.G2;
module.exports = function isValid(vk_verifier, proof, publicSignals) {
let full_pi_a = vk_verifier.IC[0];
for (let s= 0; s< vk_verifier.nPublic; s++) {
full_pi_a = G1.add( full_pi_a, G1.mulScalar( vk_verifier.IC[s+1], publicSignals[s]));
}
full_pi_a = G1.add( full_pi_a, proof.pi_a);
if (! bn128.F12.eq(
bn128.pairing( proof.pi_a , vk_verifier.vk_a ),
bn128.pairing( proof.pi_ap , G2.g )))
return false;
if (! bn128.F12.eq(
bn128.pairing( vk_verifier.vk_b, proof.pi_b ),
bn128.pairing( proof.pi_bp , G2.g )))
return false;
if (! bn128.F12.eq(
bn128.pairing( proof.pi_c , vk_verifier.vk_c ),
bn128.pairing( proof.pi_cp , G2.g )))
return false;
if (! bn128.F12.eq(
bn128.F12.mul(
bn128.pairing( G1.add(full_pi_a, proof.pi_c) , vk_verifier.vk_gb_2 ),
bn128.pairing( vk_verifier.vk_gb_1 , proof.pi_b )
),
bn128.pairing( proof.pi_kp , vk_verifier.vk_g )))
return false;
if (! bn128.F12.eq(
bn128.pairing( full_pi_a , proof.pi_b ),
bn128.F12.mul(
bn128.pairing( proof.pi_h , vk_verifier.vk_z ),
bn128.pairing( proof.pi_c , G2.g )
)))
return false;
return true;
};
},{"ffjavascript":12}],51:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
module.exports = Stream;
var EE = require('events').EventEmitter;
var inherits = require('inherits');
inherits(Stream, EE);
Stream.Readable = require('readable-stream/readable.js');
Stream.Writable = require('readable-stream/writable.js');
Stream.Duplex = require('readable-stream/duplex.js');
Stream.Transform = require('readable-stream/transform.js');
Stream.PassThrough = require('readable-stream/passthrough.js');
// Backwards-compat with node 0.4.x
Stream.Stream = Stream;
// old-style streams. Note that the pipe method (the only relevant
// part of this class) is overridden in the Readable class.
function Stream() {
EE.call(this);
}
Stream.prototype.pipe = function(dest, options) {
var source = this;
function ondata(chunk) {
if (dest.writable) {
if (false === dest.write(chunk) && source.pause) {
source.pause();
}
}
}
source.on('data', ondata);
function ondrain() {
if (source.readable && source.resume) {
source.resume();
}
}
dest.on('drain', ondrain);
// If the 'end' option is not supplied, dest.end() will be called when
// source gets the 'end' or 'close' events. Only dest.end() once.
if (!dest._isStdio && (!options || options.end !== false)) {
source.on('end', onend);
source.on('close', onclose);
}
var didOnEnd = false;
function onend() {
if (didOnEnd) return;
didOnEnd = true;
dest.end();
}
function onclose() {
if (didOnEnd) return;
didOnEnd = true;
if (typeof dest.destroy === 'function') dest.destroy();
}
// don't leave dangling pipes when there are errors.
function onerror(er) {
cleanup();
if (EE.listenerCount(this, 'error') === 0) {
throw er; // Unhandled stream error in pipe.
}
}
source.on('error', onerror);
dest.on('error', onerror);
// remove all the event listeners that were added.
function cleanup() {
source.removeListener('data', ondata);
dest.removeListener('drain', ondrain);
source.removeListener('end', onend);
source.removeListener('close', onclose);
source.removeListener('error', onerror);
dest.removeListener('error', onerror);
source.removeListener('end', cleanup);
source.removeListener('close', cleanup);
dest.removeListener('close', cleanup);
}
source.on('end', cleanup);
source.on('close', cleanup);
dest.on('close', cleanup);
dest.emit('pipe', source);
// Allow for unix-like usage: A.pipe(B).pipe(C)
return dest;
};
},{"events":11,"inherits":29,"readable-stream/duplex.js":52,"readable-stream/passthrough.js":61,"readable-stream/readable.js":62,"readable-stream/transform.js":63,"readable-stream/writable.js":64}],52:[function(require,module,exports){
module.exports = require('./lib/_stream_duplex.js');
},{"./lib/_stream_duplex.js":53}],53:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a duplex stream is just a stream that is both readable and writable.
// Since JS doesn't have multiple prototypal inheritance, this class
// prototypally inherits from Readable, and then parasitically from
// Writable.
'use strict';
/*<replacement>*/
var pna = require('process-nextick-args');
/*</replacement>*/
/*<replacement>*/
var objectKeys = Object.keys || function (obj) {
var keys = [];
for (var key in obj) {
keys.push(key);
}return keys;
};
/*</replacement>*/
module.exports = Duplex;
/*<replacement>*/
var util = Object.create(require('core-util-is'));
util.inherits = require('inherits');
/*</replacement>*/
var Readable = require('./_stream_readable');
var Writable = require('./_stream_writable');
util.inherits(Duplex, Readable);
{
// avoid scope creep, the keys array can then be collected
var keys = objectKeys(Writable.prototype);
for (var v = 0; v < keys.length; v++) {
var method = keys[v];
if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];
}
}
function Duplex(options) {
if (!(this instanceof Duplex)) return new Duplex(options);
Readable.call(this, options);
Writable.call(this, options);
if (options && options.readable === false) this.readable = false;
if (options && options.writable === false) this.writable = false;
this.allowHalfOpen = true;
if (options && options.allowHalfOpen === false) this.allowHalfOpen = false;
this.once('end', onend);
}
Object.defineProperty(Duplex.prototype, 'writableHighWaterMark', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function () {
return this._writableState.highWaterMark;
}
});
// the no-half-open enforcer
function onend() {
// if we allow half-open state, or if the writable side ended,
// then we're ok.
if (this.allowHalfOpen || this._writableState.ended) return;
// no more data can be written.
// But allow more writes to happen in this tick.
pna.nextTick(onEndNT, this);
}
function onEndNT(self) {
self.end();
}
Object.defineProperty(Duplex.prototype, 'destroyed', {
get: function () {
if (this._readableState === undefined || this._writableState === undefined) {
return false;
}
return this._readableState.destroyed && this._writableState.destroyed;
},
set: function (value) {
// we ignore the value if the stream
// has not been initialized yet
if (this._readableState === undefined || this._writableState === undefined) {
return;
}
// backward compatibility, the user is explicitly
// managing destroyed
this._readableState.destroyed = value;
this._writableState.destroyed = value;
}
});
Duplex.prototype._destroy = function (err, cb) {
this.push(null);
this.end();
pna.nextTick(cb, err);
};
},{"./_stream_readable":55,"./_stream_writable":57,"core-util-is":10,"inherits":29,"process-nextick-args":39}],54:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a passthrough stream.
// basically just the most minimal sort of Transform stream.
// Every written chunk gets output as-is.
'use strict';
module.exports = PassThrough;
var Transform = require('./_stream_transform');
/*<replacement>*/
var util = Object.create(require('core-util-is'));
util.inherits = require('inherits');
/*</replacement>*/
util.inherits(PassThrough, Transform);
function PassThrough(options) {
if (!(this instanceof PassThrough)) return new PassThrough(options);
Transform.call(this, options);
}
PassThrough.prototype._transform = function (chunk, encoding, cb) {
cb(null, chunk);
};
},{"./_stream_transform":56,"core-util-is":10,"inherits":29}],55:[function(require,module,exports){
(function (process,global){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
/*<replacement>*/
var pna = require('process-nextick-args');
/*</replacement>*/
module.exports = Readable;
/*<replacement>*/
var isArray = require('isarray');
/*</replacement>*/
/*<replacement>*/
var Duplex;
/*</replacement>*/
Readable.ReadableState = ReadableState;
/*<replacement>*/
var EE = require('events').EventEmitter;
var EElistenerCount = function (emitter, type) {
return emitter.listeners(type).length;
};
/*</replacement>*/
/*<replacement>*/
var Stream = require('./internal/streams/stream');
/*</replacement>*/
/*<replacement>*/
var Buffer = require('safe-buffer').Buffer;
var OurUint8Array = global.Uint8Array || function () {};
function _uint8ArrayToBuffer(chunk) {
return Buffer.from(chunk);
}
function _isUint8Array(obj) {
return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
}
/*</replacement>*/
/*<replacement>*/
var util = Object.create(require('core-util-is'));
util.inherits = require('inherits');
/*</replacement>*/
/*<replacement>*/
var debugUtil = require('util');
var debug = void 0;
if (debugUtil && debugUtil.debuglog) {
debug = debugUtil.debuglog('stream');
} else {
debug = function () {};
}
/*</replacement>*/
var BufferList = require('./internal/streams/BufferList');
var destroyImpl = require('./internal/streams/destroy');
var StringDecoder;
util.inherits(Readable, Stream);
var kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume'];
function prependListener(emitter, event, fn) {
// Sadly this is not cacheable as some libraries bundle their own
// event emitter implementation with them.
if (typeof emitter.prependListener === 'function') return emitter.prependListener(event, fn);
// This is a hack to make sure that our error handler is attached before any
// userland ones. NEVER DO THIS. This is here only because this code needs
// to continue to work with older versions of Node.js that do not include
// the prependListener() method. The goal is to eventually remove this hack.
if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]];
}
function ReadableState(options, stream) {
Duplex = Duplex || require('./_stream_duplex');
options = options || {};
// Duplex streams are both readable and writable, but share
// the same options object.
// However, some cases require setting options to different
// values for the readable and the writable sides of the duplex stream.
// These options can be provided separately as readableXXX and writableXXX.
var isDuplex = stream instanceof Duplex;
// object stream flag. Used to make read(n) ignore n and to
// make all the buffer merging and length checks go away
this.objectMode = !!options.objectMode;
if (isDuplex) this.objectMode = this.objectMode || !!options.readableObjectMode;
// the point at which it stops calling _read() to fill the buffer
// Note: 0 is a valid value, means "don't call _read preemptively ever"
var hwm = options.highWaterMark;
var readableHwm = options.readableHighWaterMark;
var defaultHwm = this.objectMode ? 16 : 16 * 1024;
if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (readableHwm || readableHwm === 0)) this.highWaterMark = readableHwm;else this.highWaterMark = defaultHwm;
// cast to ints.
this.highWaterMark = Math.floor(this.highWaterMark);
// A linked list is used to store data chunks instead of an array because the
// linked list can remove elements from the beginning faster than
// array.shift()
this.buffer = new BufferList();
this.length = 0;
this.pipes = null;
this.pipesCount = 0;
this.flowing = null;
this.ended = false;
this.endEmitted = false;
this.reading = false;
// a flag to be able to tell if the event 'readable'/'data' is emitted
// immediately, or on a later tick. We set this to true at first, because
// any actions that shouldn't happen until "later" should generally also
// not happen before the first read call.
this.sync = true;
// whenever we return null, then we set a flag to say
// that we're awaiting a 'readable' event emission.
this.needReadable = false;
this.emittedReadable = false;
this.readableListening = false;
this.resumeScheduled = false;
// has it been destroyed
this.destroyed = false;
// Crypto is kind of old and crusty. Historically, its default string
// encoding is 'binary' so we have to make this configurable.
// Everything else in the universe uses 'utf8', though.
this.defaultEncoding = options.defaultEncoding || 'utf8';
// the number of writers that are awaiting a drain event in .pipe()s
this.awaitDrain = 0;
// if true, a maybeReadMore has been scheduled
this.readingMore = false;
this.decoder = null;
this.encoding = null;
if (options.encoding) {
if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
this.decoder = new StringDecoder(options.encoding);
this.encoding = options.encoding;
}
}
function Readable(options) {
Duplex = Duplex || require('./_stream_duplex');
if (!(this instanceof Readable)) return new Readable(options);
this._readableState = new ReadableState(options, this);
// legacy
this.readable = true;
if (options) {
if (typeof options.read === 'function') this._read = options.read;
if (typeof options.destroy === 'function') this._destroy = options.destroy;
}
Stream.call(this);
}
Object.defineProperty(Readable.prototype, 'destroyed', {
get: function () {
if (this._readableState === undefined) {
return false;
}
return this._readableState.destroyed;
},
set: function (value) {
// we ignore the value if the stream
// has not been initialized yet
if (!this._readableState) {
return;
}
// backward compatibility, the user is explicitly
// managing destroyed
this._readableState.destroyed = value;
}
});
Readable.prototype.destroy = destroyImpl.destroy;
Readable.prototype._undestroy = destroyImpl.undestroy;
Readable.prototype._destroy = function (err, cb) {
this.push(null);
cb(err);
};
// Manually shove something into the read() buffer.
// This returns true if the highWaterMark has not been hit yet,
// similar to how Writable.write() returns true if you should
// write() some more.
Readable.prototype.push = function (chunk, encoding) {
var state = this._readableState;
var skipChunkCheck;
if (!state.objectMode) {
if (typeof chunk === 'string') {
encoding = encoding || state.defaultEncoding;
if (encoding !== state.encoding) {
chunk = Buffer.from(chunk, encoding);
encoding = '';
}
skipChunkCheck = true;
}
} else {
skipChunkCheck = true;
}
return readableAddChunk(this, chunk, encoding, false, skipChunkCheck);
};
// Unshift should *always* be something directly out of read()
Readable.prototype.unshift = function (chunk) {
return readableAddChunk(this, chunk, null, true, false);
};
function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) {
var state = stream._readableState;
if (chunk === null) {
state.reading = false;
onEofChunk(stream, state);
} else {
var er;
if (!skipChunkCheck) er = chunkInvalid(state, chunk);
if (er) {
stream.emit('error', er);
} else if (state.objectMode || chunk && chunk.length > 0) {
if (typeof chunk !== 'string' && !state.objectMode && Object.getPrototypeOf(chunk) !== Buffer.prototype) {
chunk = _uint8ArrayToBuffer(chunk);
}
if (addToFront) {
if (state.endEmitted) stream.emit('error', new Error('stream.unshift() after end event'));else addChunk(stream, state, chunk, true);
} else if (state.ended) {
stream.emit('error', new Error('stream.push() after EOF'));
} else {
state.reading = false;
if (state.decoder && !encoding) {
chunk = state.decoder.write(chunk);
if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false);else maybeReadMore(stream, state);
} else {
addChunk(stream, state, chunk, false);
}
}
} else if (!addToFront) {
state.reading = false;
}
}
return needMoreData(state);
}
function addChunk(stream, state, chunk, addToFront) {
if (state.flowing && state.length === 0 && !state.sync) {
stream.emit('data', chunk);
stream.read(0);
} else {
// update the buffer info.
state.length += state.objectMode ? 1 : chunk.length;
if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk);
if (state.needReadable) emitReadable(stream);
}
maybeReadMore(stream, state);
}
function chunkInvalid(state, chunk) {
var er;
if (!_isUint8Array(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
er = new TypeError('Invalid non-string/buffer chunk');
}
return er;
}
// if it's past the high water mark, we can push in some more.
// Also, if we have no data yet, we can stand some
// more bytes. This is to work around cases where hwm=0,
// such as the repl. Also, if the push() triggered a
// readable event, and the user called read(largeNumber) such that
// needReadable was set, then we ought to push more, so that another
// 'readable' event will be triggered.
function needMoreData(state) {
return !state.ended && (state.needReadable || state.length < state.highWaterMark || state.length === 0);
}
Readable.prototype.isPaused = function () {
return this._readableState.flowing === false;
};
// backwards compatibility.
Readable.prototype.setEncoding = function (enc) {
if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
this._readableState.decoder = new StringDecoder(enc);
this._readableState.encoding = enc;
return this;
};
// Don't raise the hwm > 8MB
var MAX_HWM = 0x800000;
function computeNewHighWaterMark(n) {
if (n >= MAX_HWM) {
n = MAX_HWM;
} else {
// Get the next highest power of 2 to prevent increasing hwm excessively in
// tiny amounts
n--;
n |= n >>> 1;
n |= n >>> 2;
n |= n >>> 4;
n |= n >>> 8;
n |= n >>> 16;
n++;
}
return n;
}
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function howMuchToRead(n, state) {
if (n <= 0 || state.length === 0 && state.ended) return 0;
if (state.objectMode) return 1;
if (n !== n) {
// Only flow one buffer at a time
if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length;
}
// If we're asking for more than the current hwm, then raise the hwm.
if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n);
if (n <= state.length) return n;
// Don't have enough
if (!state.ended) {
state.needReadable = true;
return 0;
}
return state.length;
}
// you can override either this method, or the async _read(n) below.
Readable.prototype.read = function (n) {
debug('read', n);
n = parseInt(n, 10);
var state = this._readableState;
var nOrig = n;
if (n !== 0) state.emittedReadable = false;
// if we're doing read(0) to trigger a readable event, but we
// already have a bunch of data in the buffer, then just trigger
// the 'readable' event and move on.
if (n === 0 && state.needReadable && (state.length >= state.highWaterMark || state.ended)) {
debug('read: emitReadable', state.length, state.ended);
if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this);
return null;
}
n = howMuchToRead(n, state);
// if we've ended, and we're now clear, then finish it up.
if (n === 0 && state.ended) {
if (state.length === 0) endReadable(this);
return null;
}
// All the actual chunk generation logic needs to be
// *below* the call to _read. The reason is that in certain
// synthetic stream cases, such as passthrough streams, _read
// may be a completely synchronous operation which may change
// the state of the read buffer, providing enough data when
// before there was *not* enough.
//
// So, the steps are:
// 1. Figure out what the state of things will be after we do
// a read from the buffer.
//
// 2. If that resulting state will trigger a _read, then call _read.
// Note that this may be asynchronous, or synchronous. Yes, it is
// deeply ugly to write APIs this way, but that still doesn't mean
// that the Readable class should behave improperly, as streams are
// designed to be sync/async agnostic.
// Take note if the _read call is sync or async (ie, if the read call
// has returned yet), so that we know whether or not it's safe to emit
// 'readable' etc.
//
// 3. Actually pull the requested chunks out of the buffer and return.
// if we need a readable event, then we need to do some reading.
var doRead = state.needReadable;
debug('need readable', doRead);
// if we currently have less than the highWaterMark, then also read some
if (state.length === 0 || state.length - n < state.highWaterMark) {
doRead = true;
debug('length less than watermark', doRead);
}
// however, if we've ended, then there's no point, and if we're already
// reading, then it's unnecessary.
if (state.ended || state.reading) {
doRead = false;
debug('reading or ended', doRead);
} else if (doRead) {
debug('do read');
state.reading = true;
state.sync = true;
// if the length is currently zero, then we *need* a readable event.
if (state.length === 0) state.needReadable = true;
// call internal read method
this._read(state.highWaterMark);
state.sync = false;
// If _read pushed data synchronously, then `reading` will be false,
// and we need to re-evaluate how much data we can return to the user.
if (!state.reading) n = howMuchToRead(nOrig, state);
}
var ret;
if (n > 0) ret = fromList(n, state);else ret = null;
if (ret === null) {
state.needReadable = true;
n = 0;
} else {
state.length -= n;
}
if (state.length === 0) {
// If we have nothing in the buffer, then we want to know
// as soon as we *do* get something into the buffer.
if (!state.ended) state.needReadable = true;
// If we tried to read() past the EOF, then emit end on the next tick.
if (nOrig !== n && state.ended) endReadable(this);
}
if (ret !== null) this.emit('data', ret);
return ret;
};
function onEofChunk(stream, state) {
if (state.ended) return;
if (state.decoder) {
var chunk = state.decoder.end();
if (chunk && chunk.length) {
state.buffer.push(chunk);
state.length += state.objectMode ? 1 : chunk.length;
}
}
state.ended = true;
// emit 'readable' now to make sure it gets picked up.
emitReadable(stream);
}
// Don't emit readable right away in sync mode, because this can trigger
// another read() call => stack overflow. This way, it might trigger
// a nextTick recursion warning, but that's not so bad.
function emitReadable(stream) {
var state = stream._readableState;
state.needReadable = false;
if (!state.emittedReadable) {
debug('emitReadable', state.flowing);
state.emittedReadable = true;
if (state.sync) pna.nextTick(emitReadable_, stream);else emitReadable_(stream);
}
}
function emitReadable_(stream) {
debug('emit readable');
stream.emit('readable');
flow(stream);
}
// at this point, the user has presumably seen the 'readable' event,
// and called read() to consume some data. that may have triggered
// in turn another _read(n) call, in which case reading = true if
// it's in progress.
// However, if we're not ended, or reading, and the length < hwm,
// then go ahead and try to read some more preemptively.
function maybeReadMore(stream, state) {
if (!state.readingMore) {
state.readingMore = true;
pna.nextTick(maybeReadMore_, stream, state);
}
}
function maybeReadMore_(stream, state) {
var len = state.length;
while (!state.reading && !state.flowing && !state.ended && state.length < state.highWaterMark) {
debug('maybeReadMore read 0');
stream.read(0);
if (len === state.length)
// didn't get any data, stop spinning.
break;else len = state.length;
}
state.readingMore = false;
}
// abstract method. to be overridden in specific implementation classes.
// call cb(er, data) where data is <= n in length.
// for virtual (non-string, non-buffer) streams, "length" is somewhat
// arbitrary, and perhaps not very meaningful.
Readable.prototype._read = function (n) {
this.emit('error', new Error('_read() is not implemented'));
};
Readable.prototype.pipe = function (dest, pipeOpts) {
var src = this;
var state = this._readableState;
switch (state.pipesCount) {
case 0:
state.pipes = dest;
break;
case 1:
state.pipes = [state.pipes, dest];
break;
default:
state.pipes.push(dest);
break;
}
state.pipesCount += 1;
debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts);
var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr;
var endFn = doEnd ? onend : unpipe;
if (state.endEmitted) pna.nextTick(endFn);else src.once('end', endFn);
dest.on('unpipe', onunpipe);
function onunpipe(readable, unpipeInfo) {
debug('onunpipe');
if (readable === src) {
if (unpipeInfo && unpipeInfo.hasUnpiped === false) {
unpipeInfo.hasUnpiped = true;
cleanup();
}
}
}
function onend() {
debug('onend');
dest.end();
}
// when the dest drains, it reduces the awaitDrain counter
// on the source. This would be more elegant with a .once()
// handler in flow(), but adding and removing repeatedly is
// too slow.
var ondrain = pipeOnDrain(src);
dest.on('drain', ondrain);
var cleanedUp = false;
function cleanup() {
debug('cleanup');
// cleanup event handlers once the pipe is broken
dest.removeListener('close', onclose);
dest.removeListener('finish', onfinish);
dest.removeListener('drain', ondrain);
dest.removeListener('error', onerror);
dest.removeListener('unpipe', onunpipe);
src.removeListener('end', onend);
src.removeListener('end', unpipe);
src.removeListener('data', ondata);
cleanedUp = true;
// if the reader is waiting for a drain event from this
// specific writer, then it would cause it to never start
// flowing again.
// So, if this is awaiting a drain, then we just call it now.
// If we don't know, then assume that we are waiting for one.
if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain();
}
// If the user pushes more data while we're writing to dest then we'll end up
// in ondata again. However, we only want to increase awaitDrain once because
// dest will only emit one 'drain' event for the multiple writes.
// => Introduce a guard on increasing awaitDrain.
var increasedAwaitDrain = false;
src.on('data', ondata);
function ondata(chunk) {
debug('ondata');
increasedAwaitDrain = false;
var ret = dest.write(chunk);
if (false === ret && !increasedAwaitDrain) {
// If the user unpiped during `dest.write()`, it is possible
// to get stuck in a permanently paused state if that write
// also returned false.
// => Check whether `dest` is still a piping destination.
if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) {
debug('false write response, pause', src._readableState.awaitDrain);
src._readableState.awaitDrain++;
increasedAwaitDrain = true;
}
src.pause();
}
}
// if the dest has an error, then stop piping into it.
// however, don't suppress the throwing behavior for this.
function onerror(er) {
debug('onerror', er);
unpipe();
dest.removeListener('error', onerror);
if (EElistenerCount(dest, 'error') === 0) dest.emit('error', er);
}
// Make sure our error handler is attached before userland ones.
prependListener(dest, 'error', onerror);
// Both close and finish should trigger unpipe, but only once.
function onclose() {
dest.removeListener('finish', onfinish);
unpipe();
}
dest.once('close', onclose);
function onfinish() {
debug('onfinish');
dest.removeListener('close', onclose);
unpipe();
}
dest.once('finish', onfinish);
function unpipe() {
debug('unpipe');
src.unpipe(dest);
}
// tell the dest that it's being piped to
dest.emit('pipe', src);
// start the flow if it hasn't been started already.
if (!state.flowing) {
debug('pipe resume');
src.resume();
}
return dest;
};
function pipeOnDrain(src) {
return function () {
var state = src._readableState;
debug('pipeOnDrain', state.awaitDrain);
if (state.awaitDrain) state.awaitDrain--;
if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) {
state.flowing = true;
flow(src);
}
};
}
Readable.prototype.unpipe = function (dest) {
var state = this._readableState;
var unpipeInfo = { hasUnpiped: false };
// if we're not piping anywhere, then do nothing.
if (state.pipesCount === 0) return this;
// just one destination. most common case.
if (state.pipesCount === 1) {
// passed in one, but it's not the right one.
if (dest && dest !== state.pipes) return this;
if (!dest) dest = state.pipes;
// got a match.
state.pipes = null;
state.pipesCount = 0;
state.flowing = false;
if (dest) dest.emit('unpipe', this, unpipeInfo);
return this;
}
// slow case. multiple pipe destinations.
if (!dest) {
// remove all.
var dests = state.pipes;
var len = state.pipesCount;
state.pipes = null;
state.pipesCount = 0;
state.flowing = false;
for (var i = 0; i < len; i++) {
dests[i].emit('unpipe', this, unpipeInfo);
}return this;
}
// try to find the right one.
var index = indexOf(state.pipes, dest);
if (index === -1) return this;
state.pipes.splice(index, 1);
state.pipesCount -= 1;
if (state.pipesCount === 1) state.pipes = state.pipes[0];
dest.emit('unpipe', this, unpipeInfo);
return this;
};
// set up data events if they are asked for
// Ensure readable listeners eventually get something
Readable.prototype.on = function (ev, fn) {
var res = Stream.prototype.on.call(this, ev, fn);
if (ev === 'data') {
// Start flowing on next tick if stream isn't explicitly paused
if (this._readableState.flowing !== false) this.resume();
} else if (ev === 'readable') {
var state = this._readableState;
if (!state.endEmitted && !state.readableListening) {
state.readableListening = state.needReadable = true;
state.emittedReadable = false;
if (!state.reading) {
pna.nextTick(nReadingNextTick, this);
} else if (state.length) {
emitReadable(this);
}
}
}
return res;
};
Readable.prototype.addListener = Readable.prototype.on;
function nReadingNextTick(self) {
debug('readable nexttick read 0');
self.read(0);
}
// pause() and resume() are remnants of the legacy readable stream API
// If the user uses them, then switch into old mode.
Readable.prototype.resume = function () {
var state = this._readableState;
if (!state.flowing) {
debug('resume');
state.flowing = true;
resume(this, state);
}
return this;
};
function resume(stream, state) {
if (!state.resumeScheduled) {
state.resumeScheduled = true;
pna.nextTick(resume_, stream, state);
}
}
function resume_(stream, state) {
if (!state.reading) {
debug('resume read 0');
stream.read(0);
}
state.resumeScheduled = false;
state.awaitDrain = 0;
stream.emit('resume');
flow(stream);
if (state.flowing && !state.reading) stream.read(0);
}
Readable.prototype.pause = function () {
debug('call pause flowing=%j', this._readableState.flowing);
if (false !== this._readableState.flowing) {
debug('pause');
this._readableState.flowing = false;
this.emit('pause');
}
return this;
};
function flow(stream) {
var state = stream._readableState;
debug('flow', state.flowing);
while (state.flowing && stream.read() !== null) {}
}
// wrap an old-style stream as the async data source.
// This is *not* part of the readable stream interface.
// It is an ugly unfortunate mess of history.
Readable.prototype.wrap = function (stream) {
var _this = this;
var state = this._readableState;
var paused = false;
stream.on('end', function () {
debug('wrapped end');
if (state.decoder && !state.ended) {
var chunk = state.decoder.end();
if (chunk && chunk.length) _this.push(chunk);
}
_this.push(null);
});
stream.on('data', function (chunk) {
debug('wrapped data');
if (state.decoder) chunk = state.decoder.write(chunk);
// don't skip over falsy values in objectMode
if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return;
var ret = _this.push(chunk);
if (!ret) {
paused = true;
stream.pause();
}
});
// proxy all the other methods.
// important when wrapping filters and duplexes.
for (var i in stream) {
if (this[i] === undefined && typeof stream[i] === 'function') {
this[i] = function (method) {
return function () {
return stream[method].apply(stream, arguments);
};
}(i);
}
}
// proxy certain important events.
for (var n = 0; n < kProxyEvents.length; n++) {
stream.on(kProxyEvents[n], this.emit.bind(this, kProxyEvents[n]));
}
// when we try to consume some more bytes, simply unpause the
// underlying stream.
this._read = function (n) {
debug('wrapped _read', n);
if (paused) {
paused = false;
stream.resume();
}
};
return this;
};
Object.defineProperty(Readable.prototype, 'readableHighWaterMark', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function () {
return this._readableState.highWaterMark;
}
});
// exposed for testing purposes only.
Readable._fromList = fromList;
// Pluck off n bytes from an array of buffers.
// Length is the combined lengths of all the buffers in the list.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function fromList(n, state) {
// nothing buffered
if (state.length === 0) return null;
var ret;
if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) {
// read it all, truncate the list
if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.head.data;else ret = state.buffer.concat(state.length);
state.buffer.clear();
} else {
// read part of list
ret = fromListPartial(n, state.buffer, state.decoder);
}
return ret;
}
// Extracts only enough buffered data to satisfy the amount requested.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function fromListPartial(n, list, hasStrings) {
var ret;
if (n < list.head.data.length) {
// slice is the same for buffers and strings
ret = list.head.data.slice(0, n);
list.head.data = list.head.data.slice(n);
} else if (n === list.head.data.length) {
// first chunk is a perfect match
ret = list.shift();
} else {
// result spans more than one buffer
ret = hasStrings ? copyFromBufferString(n, list) : copyFromBuffer(n, list);
}
return ret;
}
// Copies a specified amount of characters from the list of buffered data
// chunks.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function copyFromBufferString(n, list) {
var p = list.head;
var c = 1;
var ret = p.data;
n -= ret.length;
while (p = p.next) {
var str = p.data;
var nb = n > str.length ? str.length : n;
if (nb === str.length) ret += str;else ret += str.slice(0, n);
n -= nb;
if (n === 0) {
if (nb === str.length) {
++c;
if (p.next) list.head = p.next;else list.head = list.tail = null;
} else {
list.head = p;
p.data = str.slice(nb);
}
break;
}
++c;
}
list.length -= c;
return ret;
}
// Copies a specified amount of bytes from the list of buffered data chunks.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function copyFromBuffer(n, list) {
var ret = Buffer.allocUnsafe(n);
var p = list.head;
var c = 1;
p.data.copy(ret);
n -= p.data.length;
while (p = p.next) {
var buf = p.data;
var nb = n > buf.length ? buf.length : n;
buf.copy(ret, ret.length - n, 0, nb);
n -= nb;
if (n === 0) {
if (nb === buf.length) {
++c;
if (p.next) list.head = p.next;else list.head = list.tail = null;
} else {
list.head = p;
p.data = buf.slice(nb);
}
break;
}
++c;
}
list.length -= c;
return ret;
}
function endReadable(stream) {
var state = stream._readableState;
// If we get here before consuming all the bytes, then that is a
// bug in node. Should never happen.
if (state.length > 0) throw new Error('"endReadable()" called on non-empty stream');
if (!state.endEmitted) {
state.ended = true;
pna.nextTick(endReadableNT, state, stream);
}
}
function endReadableNT(state, stream) {
// Check that we didn't get one last unshift.
if (!state.endEmitted && state.length === 0) {
state.endEmitted = true;
stream.readable = false;
stream.emit('end');
}
}
function indexOf(xs, x) {
for (var i = 0, l = xs.length; i < l; i++) {
if (xs[i] === x) return i;
}
return -1;
}
}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./_stream_duplex":53,"./internal/streams/BufferList":58,"./internal/streams/destroy":59,"./internal/streams/stream":60,"_process":9,"core-util-is":10,"events":11,"inherits":29,"isarray":31,"process-nextick-args":39,"safe-buffer":40,"string_decoder/":65,"util":7}],56:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a transform stream is a readable/writable stream where you do
// something with the data. Sometimes it's called a "filter",
// but that's not a great name for it, since that implies a thing where
// some bits pass through, and others are simply ignored. (That would
// be a valid example of a transform, of course.)
//
// While the output is causally related to the input, it's not a
// necessarily symmetric or synchronous transformation. For example,
// a zlib stream might take multiple plain-text writes(), and then
// emit a single compressed chunk some time in the future.
//
// Here's how this works:
//
// The Transform stream has all the aspects of the readable and writable
// stream classes. When you write(chunk), that calls _write(chunk,cb)
// internally, and returns false if there's a lot of pending writes
// buffered up. When you call read(), that calls _read(n) until
// there's enough pending readable data buffered up.
//
// In a transform stream, the written data is placed in a buffer. When
// _read(n) is called, it transforms the queued up data, calling the
// buffered _write cb's as it consumes chunks. If consuming a single
// written chunk would result in multiple output chunks, then the first
// outputted bit calls the readcb, and subsequent chunks just go into
// the read buffer, and will cause it to emit 'readable' if necessary.
//
// This way, back-pressure is actually determined by the reading side,
// since _read has to be called to start processing a new chunk. However,
// a pathological inflate type of transform can cause excessive buffering
// here. For example, imagine a stream where every byte of input is
// interpreted as an integer from 0-255, and then results in that many
// bytes of output. Writing the 4 bytes {ff,ff,ff,ff} would result in
// 1kb of data being output. In this case, you could write a very small
// amount of input, and end up with a very large amount of output. In
// such a pathological inflating mechanism, there'd be no way to tell
// the system to stop doing the transform. A single 4MB write could
// cause the system to run out of memory.
//
// However, even in such a pathological case, only a single written chunk
// would be consumed, and then the rest would wait (un-transformed) until
// the results of the previous transformed chunk were consumed.
'use strict';
module.exports = Transform;
var Duplex = require('./_stream_duplex');
/*<replacement>*/
var util = Object.create(require('core-util-is'));
util.inherits = require('inherits');
/*</replacement>*/
util.inherits(Transform, Duplex);
function afterTransform(er, data) {
var ts = this._transformState;
ts.transforming = false;
var cb = ts.writecb;
if (!cb) {
return this.emit('error', new Error('write callback called multiple times'));
}
ts.writechunk = null;
ts.writecb = null;
if (data != null) // single equals check for both `null` and `undefined`
this.push(data);
cb(er);
var rs = this._readableState;
rs.reading = false;
if (rs.needReadable || rs.length < rs.highWaterMark) {
this._read(rs.highWaterMark);
}
}
function Transform(options) {
if (!(this instanceof Transform)) return new Transform(options);
Duplex.call(this, options);
this._transformState = {
afterTransform: afterTransform.bind(this),
needTransform: false,
transforming: false,
writecb: null,
writechunk: null,
writeencoding: null
};
// start out asking for a readable event once data is transformed.
this._readableState.needReadable = true;
// we have implemented the _read method, and done the other things
// that Readable wants before the first _read call, so unset the
// sync guard flag.
this._readableState.sync = false;
if (options) {
if (typeof options.transform === 'function') this._transform = options.transform;
if (typeof options.flush === 'function') this._flush = options.flush;
}
// When the writable side finishes, then flush out anything remaining.
this.on('prefinish', prefinish);
}
function prefinish() {
var _this = this;
if (typeof this._flush === 'function') {
this._flush(function (er, data) {
done(_this, er, data);
});
} else {
done(this, null, null);
}
}
Transform.prototype.push = function (chunk, encoding) {
this._transformState.needTransform = false;
return Duplex.prototype.push.call(this, chunk, encoding);
};
// This is the part where you do stuff!
// override this function in implementation classes.
// 'chunk' is an input chunk.
//
// Call `push(newChunk)` to pass along transformed output
// to the readable side. You may call 'push' zero or more times.
//
// Call `cb(err)` when you are done with this chunk. If you pass
// an error, then that'll put the hurt on the whole operation. If you
// never call cb(), then you'll never get another chunk.
Transform.prototype._transform = function (chunk, encoding, cb) {
throw new Error('_transform() is not implemented');
};
Transform.prototype._write = function (chunk, encoding, cb) {
var ts = this._transformState;
ts.writecb = cb;
ts.writechunk = chunk;
ts.writeencoding = encoding;
if (!ts.transforming) {
var rs = this._readableState;
if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);
}
};
// Doesn't matter what the args are here.
// _transform does all the work.
// That we got here means that the readable side wants more data.
Transform.prototype._read = function (n) {
var ts = this._transformState;
if (ts.writechunk !== null && ts.writecb && !ts.transforming) {
ts.transforming = true;
this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
} else {
// mark that we need a transform, so that any data that comes in
// will get processed, now that we've asked for it.
ts.needTransform = true;
}
};
Transform.prototype._destroy = function (err, cb) {
var _this2 = this;
Duplex.prototype._destroy.call(this, err, function (err2) {
cb(err2);
_this2.emit('close');
});
};
function done(stream, er, data) {
if (er) return stream.emit('error', er);
if (data != null) // single equals check for both `null` and `undefined`
stream.push(data);
// if there's nothing in the write buffer, then that means
// that nothing more will ever be provided
if (stream._writableState.length) throw new Error('Calling transform done when ws.length != 0');
if (stream._transformState.transforming) throw new Error('Calling transform done when still transforming');
return stream.push(null);
}
},{"./_stream_duplex":53,"core-util-is":10,"inherits":29}],57:[function(require,module,exports){
(function (process,global,setImmediate){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// A bit simpler than readable streams.
// Implement an async ._write(chunk, encoding, cb), and it'll handle all
// the drain event emission and buffering.
'use strict';
/*<replacement>*/
var pna = require('process-nextick-args');
/*</replacement>*/
module.exports = Writable;
/* <replacement> */
function WriteReq(chunk, encoding, cb) {
this.chunk = chunk;
this.encoding = encoding;
this.callback = cb;
this.next = null;
}
// It seems a linked list but it is not
// there will be only 2 of these for each stream
function CorkedRequest(state) {
var _this = this;
this.next = null;
this.entry = null;
this.finish = function () {
onCorkedFinish(_this, state);
};
}
/* </replacement> */
/*<replacement>*/
var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : pna.nextTick;
/*</replacement>*/
/*<replacement>*/
var Duplex;
/*</replacement>*/
Writable.WritableState = WritableState;
/*<replacement>*/
var util = Object.create(require('core-util-is'));
util.inherits = require('inherits');
/*</replacement>*/
/*<replacement>*/
var internalUtil = {
deprecate: require('util-deprecate')
};
/*</replacement>*/
/*<replacement>*/
var Stream = require('./internal/streams/stream');
/*</replacement>*/
/*<replacement>*/
var Buffer = require('safe-buffer').Buffer;
var OurUint8Array = global.Uint8Array || function () {};
function _uint8ArrayToBuffer(chunk) {
return Buffer.from(chunk);
}
function _isUint8Array(obj) {
return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
}
/*</replacement>*/
var destroyImpl = require('./internal/streams/destroy');
util.inherits(Writable, Stream);
function nop() {}
function WritableState(options, stream) {
Duplex = Duplex || require('./_stream_duplex');
options = options || {};
// Duplex streams are both readable and writable, but share
// the same options object.
// However, some cases require setting options to different
// values for the readable and the writable sides of the duplex stream.
// These options can be provided separately as readableXXX and writableXXX.
var isDuplex = stream instanceof Duplex;
// object stream flag to indicate whether or not this stream
// contains buffers or objects.
this.objectMode = !!options.objectMode;
if (isDuplex) this.objectMode = this.objectMode || !!options.writableObjectMode;
// the point at which write() starts returning false
// Note: 0 is a valid value, means that we always return false if
// the entire buffer is not flushed immediately on write()
var hwm = options.highWaterMark;
var writableHwm = options.writableHighWaterMark;
var defaultHwm = this.objectMode ? 16 : 16 * 1024;
if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (writableHwm || writableHwm === 0)) this.highWaterMark = writableHwm;else this.highWaterMark = defaultHwm;
// cast to ints.
this.highWaterMark = Math.floor(this.highWaterMark);
// if _final has been called
this.finalCalled = false;
// drain event flag.
this.needDrain = false;
// at the start of calling end()
this.ending = false;
// when end() has been called, and returned
this.ended = false;
// when 'finish' is emitted
this.finished = false;
// has it been destroyed
this.destroyed = false;
// should we decode strings into buffers before passing to _write?
// this is here so that some node-core streams can optimize string
// handling at a lower level.
var noDecode = options.decodeStrings === false;
this.decodeStrings = !noDecode;
// Crypto is kind of old and crusty. Historically, its default string
// encoding is 'binary' so we have to make this configurable.
// Everything else in the universe uses 'utf8', though.
this.defaultEncoding = options.defaultEncoding || 'utf8';
// not an actual buffer we keep track of, but a measurement
// of how much we're waiting to get pushed to some underlying
// socket or file.
this.length = 0;
// a flag to see when we're in the middle of a write.
this.writing = false;
// when true all writes will be buffered until .uncork() call
this.corked = 0;
// a flag to be able to tell if the onwrite cb is called immediately,
// or on a later tick. We set this to true at first, because any
// actions that shouldn't happen until "later" should generally also
// not happen before the first write call.
this.sync = true;
// a flag to know if we're processing previously buffered items, which
// may call the _write() callback in the same tick, so that we don't
// end up in an overlapped onwrite situation.
this.bufferProcessing = false;
// the callback that's passed to _write(chunk,cb)
this.onwrite = function (er) {
onwrite(stream, er);
};
// the callback that the user supplies to write(chunk,encoding,cb)
this.writecb = null;
// the amount that is being written when _write is called.
this.writelen = 0;
this.bufferedRequest = null;
this.lastBufferedRequest = null;
// number of pending user-supplied write callbacks
// this must be 0 before 'finish' can be emitted
this.pendingcb = 0;
// emit prefinish if the only thing we're waiting for is _write cbs
// This is relevant for synchronous Transform streams
this.prefinished = false;
// True if the error was already emitted and should not be thrown again
this.errorEmitted = false;
// count buffered requests
this.bufferedRequestCount = 0;
// allocate the first CorkedRequest, there is always
// one allocated and free to use, and we maintain at most two
this.corkedRequestsFree = new CorkedRequest(this);
}
WritableState.prototype.getBuffer = function getBuffer() {
var current = this.bufferedRequest;
var out = [];
while (current) {
out.push(current);
current = current.next;
}
return out;
};
(function () {
try {
Object.defineProperty(WritableState.prototype, 'buffer', {
get: internalUtil.deprecate(function () {
return this.getBuffer();
}, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003')
});
} catch (_) {}
})();
// Test _writableState for inheritance to account for Duplex streams,
// whose prototype chain only points to Readable.
var realHasInstance;
if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') {
realHasInstance = Function.prototype[Symbol.hasInstance];
Object.defineProperty(Writable, Symbol.hasInstance, {
value: function (object) {
if (realHasInstance.call(this, object)) return true;
if (this !== Writable) return false;
return object && object._writableState instanceof WritableState;
}
});
} else {
realHasInstance = function (object) {
return object instanceof this;
};
}
function Writable(options) {
Duplex = Duplex || require('./_stream_duplex');
// Writable ctor is applied to Duplexes, too.
// `realHasInstance` is necessary because using plain `instanceof`
// would return false, as no `_writableState` property is attached.
// Trying to use the custom `instanceof` for Writable here will also break the
// Node.js LazyTransform implementation, which has a non-trivial getter for
// `_writableState` that would lead to infinite recursion.
if (!realHasInstance.call(Writable, this) && !(this instanceof Duplex)) {
return new Writable(options);
}
this._writableState = new WritableState(options, this);
// legacy.
this.writable = true;
if (options) {
if (typeof options.write === 'function') this._write = options.write;
if (typeof options.writev === 'function') this._writev = options.writev;
if (typeof options.destroy === 'function') this._destroy = options.destroy;
if (typeof options.final === 'function') this._final = options.final;
}
Stream.call(this);
}
// Otherwise people can pipe Writable streams, which is just wrong.
Writable.prototype.pipe = function () {
this.emit('error', new Error('Cannot pipe, not readable'));
};
function writeAfterEnd(stream, cb) {
var er = new Error('write after end');
// TODO: defer error events consistently everywhere, not just the cb
stream.emit('error', er);
pna.nextTick(cb, er);
}
// Checks that a user-supplied chunk is valid, especially for the particular
// mode the stream is in. Currently this means that `null` is never accepted
// and undefined/non-string values are only allowed in object mode.
function validChunk(stream, state, chunk, cb) {
var valid = true;
var er = false;
if (chunk === null) {
er = new TypeError('May not write null values to stream');
} else if (typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
er = new TypeError('Invalid non-string/buffer chunk');
}
if (er) {
stream.emit('error', er);
pna.nextTick(cb, er);
valid = false;
}
return valid;
}
Writable.prototype.write = function (chunk, encoding, cb) {
var state = this._writableState;
var ret = false;
var isBuf = !state.objectMode && _isUint8Array(chunk);
if (isBuf && !Buffer.isBuffer(chunk)) {
chunk = _uint8ArrayToBuffer(chunk);
}
if (typeof encoding === 'function') {
cb = encoding;
encoding = null;
}
if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;
if (typeof cb !== 'function') cb = nop;
if (state.ended) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) {
state.pendingcb++;
ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb);
}
return ret;
};
Writable.prototype.cork = function () {
var state = this._writableState;
state.corked++;
};
Writable.prototype.uncork = function () {
var state = this._writableState;
if (state.corked) {
state.corked--;
if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);
}
};
Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {
// node::ParseEncoding() requires lower case.
if (typeof encoding === 'string') encoding = encoding.toLowerCase();
if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new TypeError('Unknown encoding: ' + encoding);
this._writableState.defaultEncoding = encoding;
return this;
};
function decodeChunk(state, chunk, encoding) {
if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {
chunk = Buffer.from(chunk, encoding);
}
return chunk;
}
Object.defineProperty(Writable.prototype, 'writableHighWaterMark', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function () {
return this._writableState.highWaterMark;
}
});
// if we're already writing something, then just put this
// in the queue, and wait our turn. Otherwise, call _write
// If we return false, then we need a drain event, so set that flag.
function writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) {
if (!isBuf) {
var newChunk = decodeChunk(state, chunk, encoding);
if (chunk !== newChunk) {
isBuf = true;
encoding = 'buffer';
chunk = newChunk;
}
}
var len = state.objectMode ? 1 : chunk.length;
state.length += len;
var ret = state.length < state.highWaterMark;
// we must ensure that previous needDrain will not be reset to false.
if (!ret) state.needDrain = true;
if (state.writing || state.corked) {
var last = state.lastBufferedRequest;
state.lastBufferedRequest = {
chunk: chunk,
encoding: encoding,
isBuf: isBuf,
callback: cb,
next: null
};
if (last) {
last.next = state.lastBufferedRequest;
} else {
state.bufferedRequest = state.lastBufferedRequest;
}
state.bufferedRequestCount += 1;
} else {
doWrite(stream, state, false, len, chunk, encoding, cb);
}
return ret;
}
function doWrite(stream, state, writev, len, chunk, encoding, cb) {
state.writelen = len;
state.writecb = cb;
state.writing = true;
state.sync = true;
if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite);
state.sync = false;
}
function onwriteError(stream, state, sync, er, cb) {
--state.pendingcb;
if (sync) {
// defer the callback if we are being called synchronously
// to avoid piling up things on the stack
pna.nextTick(cb, er);
// this can emit finish, and it will always happen
// after error
pna.nextTick(finishMaybe, stream, state);
stream._writableState.errorEmitted = true;
stream.emit('error', er);
} else {
// the caller expect this to happen before if
// it is async
cb(er);
stream._writableState.errorEmitted = true;
stream.emit('error', er);
// this can emit finish, but finish must
// always follow error
finishMaybe(stream, state);
}
}
function onwriteStateUpdate(state) {
state.writing = false;
state.writecb = null;
state.length -= state.writelen;
state.writelen = 0;
}
function onwrite(stream, er) {
var state = stream._writableState;
var sync = state.sync;
var cb = state.writecb;
onwriteStateUpdate(state);
if (er) onwriteError(stream, state, sync, er, cb);else {
// Check if we're actually ready to finish, but don't emit yet
var finished = needFinish(state);
if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {
clearBuffer(stream, state);
}
if (sync) {
/*<replacement>*/
asyncWrite(afterWrite, stream, state, finished, cb);
/*</replacement>*/
} else {
afterWrite(stream, state, finished, cb);
}
}
}
function afterWrite(stream, state, finished, cb) {
if (!finished) onwriteDrain(stream, state);
state.pendingcb--;
cb();
finishMaybe(stream, state);
}
// Must force callback to be called on nextTick, so that we don't
// emit 'drain' before the write() consumer gets the 'false' return
// value, and has a chance to attach a 'drain' listener.
function onwriteDrain(stream, state) {
if (state.length === 0 && state.needDrain) {
state.needDrain = false;
stream.emit('drain');
}
}
// if there's something in the buffer waiting, then process it
function clearBuffer(stream, state) {
state.bufferProcessing = true;
var entry = state.bufferedRequest;
if (stream._writev && entry && entry.next) {
// Fast case, write everything using _writev()
var l = state.bufferedRequestCount;
var buffer = new Array(l);
var holder = state.corkedRequestsFree;
holder.entry = entry;
var count = 0;
var allBuffers = true;
while (entry) {
buffer[count] = entry;
if (!entry.isBuf) allBuffers = false;
entry = entry.next;
count += 1;
}
buffer.allBuffers = allBuffers;
doWrite(stream, state, true, state.length, buffer, '', holder.finish);
// doWrite is almost always async, defer these to save a bit of time
// as the hot path ends with doWrite
state.pendingcb++;
state.lastBufferedRequest = null;
if (holder.next) {
state.corkedRequestsFree = holder.next;
holder.next = null;
} else {
state.corkedRequestsFree = new CorkedRequest(state);
}
state.bufferedRequestCount = 0;
} else {
// Slow case, write chunks one-by-one
while (entry) {
var chunk = entry.chunk;
var encoding = entry.encoding;
var cb = entry.callback;
var len = state.objectMode ? 1 : chunk.length;
doWrite(stream, state, false, len, chunk, encoding, cb);
entry = entry.next;
state.bufferedRequestCount--;
// if we didn't call the onwrite immediately, then
// it means that we need to wait until it does.
// also, that means that the chunk and cb are currently
// being processed, so move the buffer counter past them.
if (state.writing) {
break;
}
}
if (entry === null) state.lastBufferedRequest = null;
}
state.bufferedRequest = entry;
state.bufferProcessing = false;
}
Writable.prototype._write = function (chunk, encoding, cb) {
cb(new Error('_write() is not implemented'));
};
Writable.prototype._writev = null;
Writable.prototype.end = function (chunk, encoding, cb) {
var state = this._writableState;
if (typeof chunk === 'function') {
cb = chunk;
chunk = null;
encoding = null;
} else if (typeof encoding === 'function') {
cb = encoding;
encoding = null;
}
if (chunk !== null && chunk !== undefined) this.write(chunk, encoding);
// .end() fully uncorks
if (state.corked) {
state.corked = 1;
this.uncork();
}
// ignore unnecessary end() calls.
if (!state.ending && !state.finished) endWritable(this, state, cb);
};
function needFinish(state) {
return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing;
}
function callFinal(stream, state) {
stream._final(function (err) {
state.pendingcb--;
if (err) {
stream.emit('error', err);
}
state.prefinished = true;
stream.emit('prefinish');
finishMaybe(stream, state);
});
}
function prefinish(stream, state) {
if (!state.prefinished && !state.finalCalled) {
if (typeof stream._final === 'function') {
state.pendingcb++;
state.finalCalled = true;
pna.nextTick(callFinal, stream, state);
} else {
state.prefinished = true;
stream.emit('prefinish');
}
}
}
function finishMaybe(stream, state) {
var need = needFinish(state);
if (need) {
prefinish(stream, state);
if (state.pendingcb === 0) {
state.finished = true;
stream.emit('finish');
}
}
return need;
}
function endWritable(stream, state, cb) {
state.ending = true;
finishMaybe(stream, state);
if (cb) {
if (state.finished) pna.nextTick(cb);else stream.once('finish', cb);
}
state.ended = true;
stream.writable = false;
}
function onCorkedFinish(corkReq, state, err) {
var entry = corkReq.entry;
corkReq.entry = null;
while (entry) {
var cb = entry.callback;
state.pendingcb--;
cb(err);
entry = entry.next;
}
if (state.corkedRequestsFree) {
state.corkedRequestsFree.next = corkReq;
} else {
state.corkedRequestsFree = corkReq;
}
}
Object.defineProperty(Writable.prototype, 'destroyed', {
get: function () {
if (this._writableState === undefined) {
return false;
}
return this._writableState.destroyed;
},
set: function (value) {
// we ignore the value if the stream
// has not been initialized yet
if (!this._writableState) {
return;
}
// backward compatibility, the user is explicitly
// managing destroyed
this._writableState.destroyed = value;
}
});
Writable.prototype.destroy = destroyImpl.destroy;
Writable.prototype._undestroy = destroyImpl.undestroy;
Writable.prototype._destroy = function (err, cb) {
this.end();
cb(err);
};
}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("timers").setImmediate)
},{"./_stream_duplex":53,"./internal/streams/destroy":59,"./internal/streams/stream":60,"_process":9,"core-util-is":10,"inherits":29,"process-nextick-args":39,"safe-buffer":40,"timers":66,"util-deprecate":68}],58:[function(require,module,exports){
'use strict';
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var Buffer = require('safe-buffer').Buffer;
var util = require('util');
function copyBuffer(src, target, offset) {
src.copy(target, offset);
}
module.exports = function () {
function BufferList() {
_classCallCheck(this, BufferList);
this.head = null;
this.tail = null;
this.length = 0;
}
BufferList.prototype.push = function push(v) {
var entry = { data: v, next: null };
if (this.length > 0) this.tail.next = entry;else this.head = entry;
this.tail = entry;
++this.length;
};
BufferList.prototype.unshift = function unshift(v) {
var entry = { data: v, next: this.head };
if (this.length === 0) this.tail = entry;
this.head = entry;
++this.length;
};
BufferList.prototype.shift = function shift() {
if (this.length === 0) return;
var ret = this.head.data;
if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;
--this.length;
return ret;
};
BufferList.prototype.clear = function clear() {
this.head = this.tail = null;
this.length = 0;
};
BufferList.prototype.join = function join(s) {
if (this.length === 0) return '';
var p = this.head;
var ret = '' + p.data;
while (p = p.next) {
ret += s + p.data;
}return ret;
};
BufferList.prototype.concat = function concat(n) {
if (this.length === 0) return Buffer.alloc(0);
if (this.length === 1) return this.head.data;
var ret = Buffer.allocUnsafe(n >>> 0);
var p = this.head;
var i = 0;
while (p) {
copyBuffer(p.data, ret, i);
i += p.data.length;
p = p.next;
}
return ret;
};
return BufferList;
}();
if (util && util.inspect && util.inspect.custom) {
module.exports.prototype[util.inspect.custom] = function () {
var obj = util.inspect({ length: this.length });
return this.constructor.name + ' ' + obj;
};
}
},{"safe-buffer":40,"util":7}],59:[function(require,module,exports){
'use strict';
/*<replacement>*/
var pna = require('process-nextick-args');
/*</replacement>*/
// undocumented cb() API, needed for core, not for public API
function destroy(err, cb) {
var _this = this;
var readableDestroyed = this._readableState && this._readableState.destroyed;
var writableDestroyed = this._writableState && this._writableState.destroyed;
if (readableDestroyed || writableDestroyed) {
if (cb) {
cb(err);
} else if (err && (!this._writableState || !this._writableState.errorEmitted)) {
pna.nextTick(emitErrorNT, this, err);
}
return this;
}
// we set destroyed to true before firing error callbacks in order
// to make it re-entrance safe in case destroy() is called within callbacks
if (this._readableState) {
this._readableState.destroyed = true;
}
// if this is a duplex stream mark the writable part as destroyed as well
if (this._writableState) {
this._writableState.destroyed = true;
}
this._destroy(err || null, function (err) {
if (!cb && err) {
pna.nextTick(emitErrorNT, _this, err);
if (_this._writableState) {
_this._writableState.errorEmitted = true;
}
} else if (cb) {
cb(err);
}
});
return this;
}
function undestroy() {
if (this._readableState) {
this._readableState.destroyed = false;
this._readableState.reading = false;
this._readableState.ended = false;
this._readableState.endEmitted = false;
}
if (this._writableState) {
this._writableState.destroyed = false;
this._writableState.ended = false;
this._writableState.ending = false;
this._writableState.finished = false;
this._writableState.errorEmitted = false;
}
}
function emitErrorNT(self, err) {
self.emit('error', err);
}
module.exports = {
destroy: destroy,
undestroy: undestroy
};
},{"process-nextick-args":39}],60:[function(require,module,exports){
module.exports = require('events').EventEmitter;
},{"events":11}],61:[function(require,module,exports){
module.exports = require('./readable').PassThrough
},{"./readable":62}],62:[function(require,module,exports){
exports = module.exports = require('./lib/_stream_readable.js');
exports.Stream = exports;
exports.Readable = exports;
exports.Writable = require('./lib/_stream_writable.js');
exports.Duplex = require('./lib/_stream_duplex.js');
exports.Transform = require('./lib/_stream_transform.js');
exports.PassThrough = require('./lib/_stream_passthrough.js');
},{"./lib/_stream_duplex.js":53,"./lib/_stream_passthrough.js":54,"./lib/_stream_readable.js":55,"./lib/_stream_transform.js":56,"./lib/_stream_writable.js":57}],63:[function(require,module,exports){
module.exports = require('./readable').Transform
},{"./readable":62}],64:[function(require,module,exports){
module.exports = require('./lib/_stream_writable.js');
},{"./lib/_stream_writable.js":57}],65:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
/*<replacement>*/
var Buffer = require('safe-buffer').Buffer;
/*</replacement>*/
var isEncoding = Buffer.isEncoding || function (encoding) {
encoding = '' + encoding;
switch (encoding && encoding.toLowerCase()) {
case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw':
return true;
default:
return false;
}
};
function _normalizeEncoding(enc) {
if (!enc) return 'utf8';
var retried;
while (true) {
switch (enc) {
case 'utf8':
case 'utf-8':
return 'utf8';
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return 'utf16le';
case 'latin1':
case 'binary':
return 'latin1';
case 'base64':
case 'ascii':
case 'hex':
return enc;
default:
if (retried) return; // undefined
enc = ('' + enc).toLowerCase();
retried = true;
}
}
};
// Do not cache `Buffer.isEncoding` when checking encoding names as some
// modules monkey-patch it to support additional encodings
function normalizeEncoding(enc) {
var nenc = _normalizeEncoding(enc);
if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc);
return nenc || enc;
}
// StringDecoder provides an interface for efficiently splitting a series of
// buffers into a series of JS strings without breaking apart multi-byte
// characters.
exports.StringDecoder = StringDecoder;
function StringDecoder(encoding) {
this.encoding = normalizeEncoding(encoding);
var nb;
switch (this.encoding) {
case 'utf16le':
this.text = utf16Text;
this.end = utf16End;
nb = 4;
break;
case 'utf8':
this.fillLast = utf8FillLast;
nb = 4;
break;
case 'base64':
this.text = base64Text;
this.end = base64End;
nb = 3;
break;
default:
this.write = simpleWrite;
this.end = simpleEnd;
return;
}
this.lastNeed = 0;
this.lastTotal = 0;
this.lastChar = Buffer.allocUnsafe(nb);
}
StringDecoder.prototype.write = function (buf) {
if (buf.length === 0) return '';
var r;
var i;
if (this.lastNeed) {
r = this.fillLast(buf);
if (r === undefined) return '';
i = this.lastNeed;
this.lastNeed = 0;
} else {
i = 0;
}
if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i);
return r || '';
};
StringDecoder.prototype.end = utf8End;
// Returns only complete characters in a Buffer
StringDecoder.prototype.text = utf8Text;
// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer
StringDecoder.prototype.fillLast = function (buf) {
if (this.lastNeed <= buf.length) {
buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed);
return this.lastChar.toString(this.encoding, 0, this.lastTotal);
}
buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length);
this.lastNeed -= buf.length;
};
// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a
// continuation byte. If an invalid byte is detected, -2 is returned.
function utf8CheckByte(byte) {
if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4;
return byte >> 6 === 0x02 ? -1 : -2;
}
// Checks at most 3 bytes at the end of a Buffer in order to detect an
// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4)
// needed to complete the UTF-8 character (if applicable) are returned.
function utf8CheckIncomplete(self, buf, i) {
var j = buf.length - 1;
if (j < i) return 0;
var nb = utf8CheckByte(buf[j]);
if (nb >= 0) {
if (nb > 0) self.lastNeed = nb - 1;
return nb;
}
if (--j < i || nb === -2) return 0;
nb = utf8CheckByte(buf[j]);
if (nb >= 0) {
if (nb > 0) self.lastNeed = nb - 2;
return nb;
}
if (--j < i || nb === -2) return 0;
nb = utf8CheckByte(buf[j]);
if (nb >= 0) {
if (nb > 0) {
if (nb === 2) nb = 0;else self.lastNeed = nb - 3;
}
return nb;
}
return 0;
}
// Validates as many continuation bytes for a multi-byte UTF-8 character as
// needed or are available. If we see a non-continuation byte where we expect
// one, we "replace" the validated continuation bytes we've seen so far with
// a single UTF-8 replacement character ('\ufffd'), to match v8's UTF-8 decoding
// behavior. The continuation byte check is included three times in the case
// where all of the continuation bytes for a character exist in the same buffer.
// It is also done this way as a slight performance increase instead of using a
// loop.
function utf8CheckExtraBytes(self, buf, p) {
if ((buf[0] & 0xC0) !== 0x80) {
self.lastNeed = 0;
return '\ufffd';
}
if (self.lastNeed > 1 && buf.length > 1) {
if ((buf[1] & 0xC0) !== 0x80) {
self.lastNeed = 1;
return '\ufffd';
}
if (self.lastNeed > 2 && buf.length > 2) {
if ((buf[2] & 0xC0) !== 0x80) {
self.lastNeed = 2;
return '\ufffd';
}
}
}
}
// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer.
function utf8FillLast(buf) {
var p = this.lastTotal - this.lastNeed;
var r = utf8CheckExtraBytes(this, buf, p);
if (r !== undefined) return r;
if (this.lastNeed <= buf.length) {
buf.copy(this.lastChar, p, 0, this.lastNeed);
return this.lastChar.toString(this.encoding, 0, this.lastTotal);
}
buf.copy(this.lastChar, p, 0, buf.length);
this.lastNeed -= buf.length;
}
// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a
// partial character, the character's bytes are buffered until the required
// number of bytes are available.
function utf8Text(buf, i) {
var total = utf8CheckIncomplete(this, buf, i);
if (!this.lastNeed) return buf.toString('utf8', i);
this.lastTotal = total;
var end = buf.length - (total - this.lastNeed);
buf.copy(this.lastChar, 0, end);
return buf.toString('utf8', i, end);
}
// For UTF-8, a replacement character is added when ending on a partial
// character.
function utf8End(buf) {
var r = buf && buf.length ? this.write(buf) : '';
if (this.lastNeed) return r + '\ufffd';
return r;
}
// UTF-16LE typically needs two bytes per character, but even if we have an even
// number of bytes available, we need to check if we end on a leading/high
// surrogate. In that case, we need to wait for the next two bytes in order to
// decode the last character properly.
function utf16Text(buf, i) {
if ((buf.length - i) % 2 === 0) {
var r = buf.toString('utf16le', i);
if (r) {
var c = r.charCodeAt(r.length - 1);
if (c >= 0xD800 && c <= 0xDBFF) {
this.lastNeed = 2;
this.lastTotal = 4;
this.lastChar[0] = buf[buf.length - 2];
this.lastChar[1] = buf[buf.length - 1];
return r.slice(0, -1);
}
}
return r;
}
this.lastNeed = 1;
this.lastTotal = 2;
this.lastChar[0] = buf[buf.length - 1];
return buf.toString('utf16le', i, buf.length - 1);
}
// For UTF-16LE we do not explicitly append special replacement characters if we
// end on a partial character, we simply let v8 handle that.
function utf16End(buf) {
var r = buf && buf.length ? this.write(buf) : '';
if (this.lastNeed) {
var end = this.lastTotal - this.lastNeed;
return r + this.lastChar.toString('utf16le', 0, end);
}
return r;
}
function base64Text(buf, i) {
var n = (buf.length - i) % 3;
if (n === 0) return buf.toString('base64', i);
this.lastNeed = 3 - n;
this.lastTotal = 3;
if (n === 1) {
this.lastChar[0] = buf[buf.length - 1];
} else {
this.lastChar[0] = buf[buf.length - 2];
this.lastChar[1] = buf[buf.length - 1];
}
return buf.toString('base64', i, buf.length - n);
}
function base64End(buf) {
var r = buf && buf.length ? this.write(buf) : '';
if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed);
return r;
}
// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex)
function simpleWrite(buf) {
return buf.toString(this.encoding);
}
function simpleEnd(buf) {
return buf && buf.length ? this.write(buf) : '';
}
},{"safe-buffer":40}],66:[function(require,module,exports){
(function (setImmediate,clearImmediate){
var nextTick = require('process/browser.js').nextTick;
var apply = Function.prototype.apply;
var slice = Array.prototype.slice;
var immediateIds = {};
var nextImmediateId = 0;
// DOM APIs, for completeness
exports.setTimeout = function() {
return new Timeout(apply.call(setTimeout, window, arguments), clearTimeout);
};
exports.setInterval = function() {
return new Timeout(apply.call(setInterval, window, arguments), clearInterval);
};
exports.clearTimeout =
exports.clearInterval = function(timeout) { timeout.close(); };
function Timeout(id, clearFn) {
this._id = id;
this._clearFn = clearFn;
}
Timeout.prototype.unref = Timeout.prototype.ref = function() {};
Timeout.prototype.close = function() {
this._clearFn.call(window, this._id);
};
// Does not start the time, just sets up the members needed.
exports.enroll = function(item, msecs) {
clearTimeout(item._idleTimeoutId);
item._idleTimeout = msecs;
};
exports.unenroll = function(item) {
clearTimeout(item._idleTimeoutId);
item._idleTimeout = -1;
};
exports._unrefActive = exports.active = function(item) {
clearTimeout(item._idleTimeoutId);
var msecs = item._idleTimeout;
if (msecs >= 0) {
item._idleTimeoutId = setTimeout(function onTimeout() {
if (item._onTimeout)
item._onTimeout();
}, msecs);
}
};
// That's not how node.js implements it but the exposed api is the same.
exports.setImmediate = typeof setImmediate === "function" ? setImmediate : function(fn) {
var id = nextImmediateId++;
var args = arguments.length < 2 ? false : slice.call(arguments, 1);
immediateIds[id] = true;
nextTick(function onNextTick() {
if (immediateIds[id]) {
// fn.call() is faster so we optimize for the common use-case
// @see http://jsperf.com/call-apply-segu
if (args) {
fn.apply(null, args);
} else {
fn.call(null);
}
// Prevent ids from leaking
exports.clearImmediate(id);
}
});
return id;
};
exports.clearImmediate = typeof clearImmediate === "function" ? clearImmediate : function(id) {
delete immediateIds[id];
};
}).call(this,require("timers").setImmediate,require("timers").clearImmediate)
},{"process/browser.js":67,"timers":66}],67:[function(require,module,exports){
arguments[4][9][0].apply(exports,arguments)
},{"dup":9}],68:[function(require,module,exports){
(function (global){
/**
* Module exports.
*/
module.exports = deprecate;
/**
* Mark that a method should not be used.
* Returns a modified function which warns once by default.
*
* If `localStorage.noDeprecation = true` is set, then it is a no-op.
*
* If `localStorage.throwDeprecation = true` is set, then deprecated functions
* will throw an Error when invoked.
*
* If `localStorage.traceDeprecation = true` is set, then deprecated functions
* will invoke `console.trace()` instead of `console.error()`.
*
* @param {Function} fn - the function to deprecate
* @param {String} msg - the string to print to the console when `fn` is invoked
* @returns {Function} a new "deprecated" version of `fn`
* @api public
*/
function deprecate (fn, msg) {
if (config('noDeprecation')) {
return fn;
}
var warned = false;
function deprecated() {
if (!warned) {
if (config('throwDeprecation')) {
throw new Error(msg);
} else if (config('traceDeprecation')) {
console.trace(msg);
} else {
console.warn(msg);
}
warned = true;
}
return fn.apply(this, arguments);
}
return deprecated;
}
/**
* Checks `localStorage` for boolean values for the given `name`.
*
* @param {String} name
* @returns {Boolean}
* @api private
*/
function config (name) {
// accessing global.localStorage can trigger a DOMException in sandboxed iframes
try {
if (!global.localStorage) return false;
} catch (_) {
return false;
}
var val = global.localStorage[name];
if (null == val) return false;
return String(val).toLowerCase() === 'true';
}
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}]},{},[41])(41)
});